Fix PNaCl-local files after merging LLVM 3.4

Fix PNaCl-local files after merging LLVM 3.4

These are mostly compile fixes:

 * Update for interface changes:
    * readBytes() (unused arg was removed)
    * tool_output_file takes different flags
    * Materialize() uses error_code instead of bool + string
 * Remove uses of case ranges, which were removed in 3.4
 * pnacl-llc: Some TargetOptions fields were removed in 3.4

Also update test expectations.  LLVM's 'not' tool now treats crashes
as a failure unless '--crash' is passed.

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3757
TEST=PNaCl toolchain trybots

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-llvm.git;a=commit;h=fe90708cae889704bba598c5d83eb4d8f38a37c7

[jvoung (off chromium), 2014-02-28 22:31:48]

lgtm

[jvoung (off chromium), 2014-04-01 23:48:13]

This CL can be closed now?

[Mark Seaborn, 2014-04-02 00:35:39]

On 2014/04/01 23:48:13, jvoung (cr) wrote:
> This CL can be closed now?

Yes.  Committed as:
https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-llvm.git;a=co...