Revert "Stop using struct wrappers for Neon vector types in <arm_neon.h>." It's breaking buildbots.
Revert "Stop using struct wrappers for Neon vector types in <arm_neon.h>."
It's breaking buildbots.

git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@119363 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx