roll gyp 1233:1238
roll gyp 1233:1238

1234: Update test/restat to not expect `touch' to be in the path.
1235: Add fallback for COPY when mklink not available (windows ninja).
1236: Add ninja to Windows test runs on the gyp bots.
1237: Let mac ninja and mac make work better with xcode 4.3.
1238: ninja&make/mac: Continue working on xcode4.2 and below, too.

BUG=116939
TEST=fewer errors when building with make or ninja on mac with xcode 4.3.
TBR=mark

Review URL: http://codereview.chromium.org/9632027

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@125707 0039d316-1c4b-4281-b951-d872f2087c98

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