Fix android_arm build hosted on Mac

Fix android_arm build hosted on Mac

Fixes for misnamed toolchain from https://github.com/appcelerator/v8_titanium.

Added a way to specify the NDK path since the Mac versions of the NDK aren't checked into the tools repo.

Disabled a few dependencies which do not build on the Mac but which aren't needed for building usable V8 static libraries.

Made the including of libdl and librt omitted for Mac hosted builds.

BUG=

Committed: https://crrev.com/31355336d1e1ba0d8b8919ccf7338700b9df1900
Cr-Commit-Position: refs/heads/master@{#35456}

[Jakob Kummerow, 2016-04-13 16:29:12]

jkummerow@chromium.org changed reviewers:
+ jkummerow@chromium.org

[Jakob Kummerow, 2016-04-13 16:29:12]

The CQ bit was checked by jkummerow@chromium.org

[Jakob Kummerow, 2016-04-13 16:29:13]

lgtm

[commit-bot: I haz the power, 2016-04-13 16:29:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1879793002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1879793002/1

[commit-bot: I haz the power, 2016-04-13 16:31:50]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-04-13 16:31:51]

Try jobs failed on following builders:
  v8_win_compile_dbg on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_compile_dbg/builds/1...)

[Jakob Kummerow, 2016-04-13 19:50:34]

https://codereview.chromium.org/1879793002/diff/1/build/standalone.gypi
File build/standalone.gypi (right):

https://codereview.chromium.org/1879793002/diff/1/build/standalone.gypi#newco...
build/standalone.gypi:360: 'host_ld': '<!(which ld)',
This "which ld" (along with "which ranlib" right below) must be the one that the
Windows bots are complaining about. Is it necessary to have this? If yes, then
presumably it's only needed for Android builds, so how about moving it into the
OS=="android" section above, and/or guarding it with an appropriate host_os
check?

[robtsuk, 2016-04-13 22:53:38]

The CQ bit was checked by robtsuk@google.com

[robtsuk, 2016-04-13 22:53:39]

The patchset sent to the CQ was uploaded after l-g-t-m from
jkummerow@chromium.org
Link to the patchset: https://codereview.chromium.org/1879793002/#ps20001
(title: "Fix Windows build break")

[commit-bot: I haz the power, 2016-04-13 22:53:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1879793002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1879793002/20001

[commit-bot: I haz the power, 2016-04-13 23:12:02]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-13 23:13:46]

Description was changed from

==========
Fix android_arm build hosted on Mac

Fixes for misnamed toolchain from https://github.com/appcelerator/v8_titanium.

Added a way to specify the NDK path since the Mac versions of the NDK aren't
checked into the tools repo.

Disabled a few dependencies which do not build on the Mac but which aren't
needed for building usable V8 static libraries.

Made the including of libdl and librt omitted for Mac hosted builds.

BUG=
==========

to

==========
Fix android_arm build hosted on Mac

Fixes for misnamed toolchain from https://github.com/appcelerator/v8_titanium.

Added a way to specify the NDK path since the Mac versions of the NDK aren't
checked into the tools repo.

Disabled a few dependencies which do not build on the Mac but which aren't
needed for building usable V8 static libraries.

Made the including of libdl and librt omitted for Mac hosted builds.

BUG=

Committed: https://crrev.com/31355336d1e1ba0d8b8919ccf7338700b9df1900
Cr-Commit-Position: refs/heads/master@{#35456}
==========

[commit-bot: I haz the power, 2016-04-13 23:13:47]

Patchset 2 (id:??) landed as
https://crrev.com/31355336d1e1ba0d8b8919ccf7338700b9df1900
Cr-Commit-Position: refs/heads/master@{#35456}