roll gyp 1381:1384

1382: msvs: add some touches to many-actions test
1383: Revert r1362: MSVS 2008: Fix to ensure that actions are re-run when the command changes
1384: mac ninja and make: Add support for GCC_ENABLE_OBJC_GC.

BUG=none
TEST=none
TBR=mseaborn

Review URL: https://chromiumcodereview.appspot.com/10399070

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137697 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -121,7 +121,7 @@ deps = {
     (Var("googlecode_url") % "grit-i18n") + "/trunk@37",
 
   "src/tools/gyp":
-    (Var("googlecode_url") % "gyp") + "/trunk@1381",
+    (Var("googlecode_url") % "gyp") + "/trunk@1384",
 
   "src/v8":
     (Var("googlecode_url") % "v8") + "/trunk@" + Var("v8_revision"),