Temporarily generate xcodeproj bundles with _gyp in the name to avoid colliding with checked-in xcodeprojs.  Inspired by the msvs generator.
Temporarily generate xcodeproj bundles with _gyp in the name to avoid colliding
with checked-in xcodeprojs.  Inspired by the msvs generator.

old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google