revert r2110, which broke Mac builds

git-svn-id: http://skia.googlecode.com/svn/trunk@2111 2bbb7eff-a529-9590-31e7-b0007b416f81

DEPS

@@ -8,7 +8,7 @@ use_relative_paths = True
 # See third_party/externals/README
 #
 deps = {
-  "third_party/externals/gyp" : "http://gyp.googlecode.com/svn/trunk@995",
+  "third_party/externals/gyp" : "http://gyp.googlecode.com/svn/trunk@940",
 }
 
 #hooks = [

gyp_skia

@@ -86,6 +86,7 @@ if __name__ == '__main__':
   # - msvs_abspath_output is a workaround for
   #   http://code.google.com/p/gyp/issues/detail?id=201
   args.extend(['-Gmsvs_version=2010'])
+  args.extend(['-Gmsvs_abspath_output'])
 
   print 'Updating projects from gyp files...'
   sys.stdout.flush()