Merge remote branch 'goog/master' into mm

Plus a hack in cpu-features.h to avoid errors like this:

  bionic/libc/arch-arm/bionic/strcpy.S: Assembler messages:
  bionic/libc/arch-arm/bionic/strcpy.S:42: Error: bad instruction `pld(r1, #0)'

(The alternative would probably have been to pull in the build change
that defines __ASSEMBLY__, but I don't want to do any more than necessary.)

Change-Id: Idad9665eb8cf5ef6a093c85d3098d11a37f5ac6a