Bug 967587. Back out this hunk of bug 946502 part 3 until we can fix the regressions. r=mattwoodrow

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extra : rebase_source : d52729121395a8a59c99e4e30a4565b8eab7f13d
Bug 968118. Make nsCSSProps keyword tables be int16_t instead of int32_t for a small space win. r=heycam

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extra : rebase_source : 94cf09d0d96dd3c8e2a9528f5d242e36e85fcf75