Updates version number.
Updates version number.

Significant changes:
- Parses xccurrentversion files so Core Data models will have the
  correct version selected in Xcode.
- Removes --keep_going from queries so things fail faster (since
  aspects are more sensitive to BUILD errors there's little reason to
  bypass errors detected in the initial query phase).
- Adds PCH and bridging headers to the generated project.
- Fixes support for non_arc_srcs source files.
- Adds handling for misnamed dSYM files generated for xctest bundles.

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MOS_MIGRATED_REVID=118460646

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