Update checked in version of gsutil to version 4.6

CHANGES.md

+Release 4.6 (release date: 2014-09-08)
+=======================================
+
+Bug Fixes
+---------
+- Fixed a TypeError bug that occurred in perfdiag write throughput tests.
+- Fixed an rsync bug that caused invalid symlinks to abort the transfer
+  even when -e option was specified.
+- Fixed a perfdiag assumption that ipaddrlist was populated.
+- Fixed an AttributeError when setting an invalid canned ACL with defacl set.
+- Fixed a bug where non-resumable uploads would include payload in debug output
+  when for running in debug mode (-D).
+
+Other Changes
+-------------
+- Added the proxy_rdns configuration variable for clients that
+  do DNS lookups via a proxy.
+- Added the state_dir configuration variable for choosing the location of
+  gsutil's internal state files, including resumable transfer tracker files.
+  resumable_tracker_dir configuration variable is now deprecated.
+- Added DNS, connection latency, and proxy use information to perfdiag
+  command.
+- perfdiag command will not perform DNS lookups if they are disabled in
+  boto config.
+- perfdiag command will now only attempt to delete uploaded objects when
+  running write tests.
+- Added code coverage support to test command.
+- rsync -d now succeeds on a 404 for a to-be-deleted object (for example, when
+  the object was already deleted by an external process).
+
+Release 4.5 (release date: 2014-08-14)
+=======================================
+
+Bug Fixes
+---------
+- Fixed a bug that caused resumable uploads to restart if gsutil was
+  terminated with CTRL-C.
+- Fixed a bug in defacl ch command that caused a failure when updating
+  an existing default object ACL entry.
+- Fixed an invalid literal bug during rsync file listing.
+- Made several improvements to JSON upload stability, including fixing a bug
+  which occasionally caused resumable upload hashes not to catch up properly.
+- All JSON calls now have socket timeouts, eliminating hangs under
+  flaky network conditions.
+- Fixed a bug where acl ch -g AllAuthenticatedUsers would instead add
+  AllUsers.
+- Fixed a bug that caused object custom metadata not to be preserved when
+  copying in the cloud.
+- Fixed a bug where du -s did not properly elide subdirectories.
+
+Other Changes
+-------------
+- Parallel composite uploads are now disabled by default until crcmod is
+  available in major Linux distributions. To re-enable the setting from
+  prior versions, in the [GSUtil] section of your .boto config file, add:
+  parallel_composite_upload_threshold=150M
+- Non-wildcarded URLs for existing objects now use Get before trying List
+  (as in gsutil3), and thus are not subject to eventual listing consistency.
+- gsutil -D now redacts proxy configuration values in the output.
+
+Release 4.4 (release date: 2014-07-17)
+=======================================
+
+New Features
+------------
+- Added the hash command, which can calculate hashes of local files.
+  gsutil already calculates hashes for integrity checking, but this allows
+  the user to separately calculate the MD5 and CRC32c hashes of a local file.
+
+Bug Fixes
+---------
+- Many improvements to JSON API media transfers, including far
+  more robust retry logic.
+- Fixed "File changed during upload: EOF..." errors on XML resumable uploads.
+- Fixed rsync command to read and write index files in binary mode.
+- Fix potential TypeError in _CheckAndHandleCredentialException.
+- Fixed possible data corruption when using JSON API uploads for
+  small files with lines starting with "From:", which would cause
+  integrity checks to fail.
+- Fixed gsutil cp to skip directory placeholders when downloading, avoiding
+  "directory exists where the file needs to be created" errors.
+- Fixed daisy chain cp/rsync for files >= 100MB.
+- Fixed a bug in JSON proxy support where the proxy info was sometimes unused.
+- Fixed a bug where an acl get on a private default object ACL returned an
+  error instead of a blank ACL.
+- Fixed a JSON API issue with large HTTP responses on 32-bit systems.
+
+Other Changes
+-------------
+- Improved object listing performance when using the XML API.
+- Improved various error messages.
+- Improved progress display during media transfer.
+- Switched to truncated exponential backoff for retries.
+- Improved OS-specific ulimit checks.
+- Added some information such as OS and Cloud SDK wrapping to gsutil version,
+  and changed the output format to be more uniform.
+- Daisy chain cp/rsync now supports resumable uploads.
+- Improved proxy support for proxy username and passwords.
+- x-amz headers are now supported for cp, rsync, and setmeta.  x-amz-meta
+  headers continue to be supported as well.
+
+Release 4.3 (release date: 2014-06-10)
+=======================================
+
+Bug Fixes
+---------
+- Fix acl/defacl ch changing the role of an existing group.
+- Fix unicode and 404 errors when using manifests.
+- Fix parallelism configuration bug that limited gsutil rsync to two threads
+  and could lead to rsync hangs. "gsutil -m rsync" runs much faster, and rsync
+  uploads of large local files are now faster via parallel composite upload.
+  Parallel composite uploads of large files are also faster.
+- Fix rsync bug with parallel composite uploads.
+- Fix TypeError that could occur when running the cp command with no
+  credentials.
+
+Other Changes
+-------------
+- Progress indicators for -m cp/rsync commands are now more readable.
+- Added command being run to gsutil -d/-D output.
+- Lowered default parallelism for 'gsutil -m test' and added hang detection.
+
+Release 4.2 (release date: 2014-06-05)
+=======================================
+
+New Features
+------------
+- Added parallel test execution support to test command, ex: "gsutil -m test"
+
+Bug Fixes
+---------
+- Fix failure during retry of an XML download.
+- Moved to boto release 2.29.1 fixing boto authentication erroneously
+  reporting OAuth2 credentials as invalid.
+- Fix parallel composite uploads when using only a single process and thread.
+- Fix an invalid seek during daisy chain operation that affected file copy
+  from Google Cloud Storage -> S3 for files greater than 8KB in size.
+- Fix "gsutil acl ch" with AllUsers or AllAuthenticatedUsers groups.
+- Fix some copy errors writing new lines to the manifest file.
+- Fix "gsutil test" return code to properly be 0 on success.
+
+Other Changes
+-------------
+- "gsutil cp -z" now ignores whitespace in the extension list.
+
+Release 4.1 (release date: 2014-05-28)
+=======================================
+
+Bug Fixes
+---------
+- Fixed a bug in parallel composite uploads where uploads with
+  existing components would fail.
+- Moved gcs-oauth2-boto-plugin to version 1.5, fixing a bug in the PyPi gsutil
+  distribution that would cause gsutil to unnecessarily attempt to query
+  the Google Compute Engine metadata service.
+
+Other Changes
+-------------
+- Parallel composite uploads no longer specify an if-not-match precondition
+  when uploading component parts.
+- Parallel composite uploads no longer calculate a CRC32c hash prior to
+  uploading component parts (these are still validated by an MD5 hash).
+- Removed apitools dependency on gflags.
+
+Release 4.0 (release date: 2014-05-27)
+=======================================
+
+Major New Gsutil Version - Backwards-Incompatible Changes
+------------------------------
+- The Google Cloud Storage configuration data supported by the acl, cors,
+  and lifecycle commands now uses the JSON format instead of the older XML
+  format. gsutil 4.0 will fail and provide conversion instructions if an XML
+  configuration file is provided as an argument for a gs:// URL.
+- gsutil no longer accepts arbitrary headers via the global -h flag.
+  Documented headers for gsutil commands are still supported; for the
+  full list of supported headers, see "gsutil help command_opts".
+- The compose command will now default the destination object's
+  Content-Type to the Content-Type of the first source object if none
+  is provided via the -h global flag.
+- The long-deprecated -t and -q options have been removed from the cp command.
+- The perfdiag command no longer supports adding a host header.
+- Having OAuth2 User Account credentials and OAuth2 Service Account
+  credentials configured simultaneously will now fail with an error message
+  to avoid confusion.  Also, a single invalid credential will fail with an
+  error message.  See "gsutil help creds" for details.
+- Bucket relocate scripts have been removed.
+- Downloading object names ending with '/' is no longer supported to avoid
+  problems this caused for directores using the Google Cloud Console.
+- rm -r now implies rm -ra (removing all object versions recursively).
+- All commands using the global -m option or a force option (such as 
+  rm -f or cp -c) will now return a non-zero exit code if there are any
+  failures during the operation.
+- MD5 and CRC32c values are now represented in base64 encoding instead
+  of hex encoding (this includes manifest files).
+
+New Features
+------------
+- The Google Cloud Storage JSON API (v1) is now the default API used
+  by gsutil for all commands targeting gs:// URLs. The JSON API is more
+  bandwidth efficient than the older XML API when transferring metadata
+  and does not require separate calls to preserve object ACLs when copying.
+  The XML API will automatically be used when accessing s3:// URLs.
+- The Google Cloud Storage XML API can be used in lieu of the JSON API
+  by setting 'prefer_api = xml' in the GSUtil section of your boto config file.
+- Added the rsync command that can synchronize cloud and local directories.
+- Added the signurl command that can generate Google Cloud Storage signed URLs.
+- The perfdiag command now supports a listing latency test.
+- The rb command now supports a -f flag allowing it to continue when errors
+  are encountered.
+- The test command now supports a -s flag that runs tests against S3.
+
+Other Changes
+-------------
+- All python files not under a third_party directory are now pylint-clean,
+  with the exception of TODO-format and a handful of warnings in root-level
+  files. As part of the de-linting process, many edge-case bugs were
+  identified and fixed.
+- The ls command now operates depth-first (as in Unix ls) instead
+  of breadth-first.
+- Daisy-chain copying does not currently support resumable uploads.
+- Several compatibility improvements for Windows and S3.
+
+
 Release 3.42 (release-date: 2014-01-15)
 =======================================
 
 Other Changes
 -------------
 
 - Fixed potential bug with update command on CentOS.
 
 
 Release 3.41 (release-date: 2014-01-14)
@@ skipping 1123 matching lines @@
     administrator to install gsutil in a central location, using the Python
     distutils facility. This mode is supported only on Linux and MacOS.
   - RPM mode (new). A RedHat RPM can be built from the gsutil.spec.in file
     in the unpacked gsutil directory, allowing it to be installed as part of
     a RedHat build.
 
 - Note: v2.0 is the first numbered gsutil release. Previous releases
   were given timestamps for versions. Numbered releases enable downstream
   package builds (like RPMs) to define dependencies more easily.
   This is also the first version where we began including release notes.