Cleanup arm assembly.

Remove the old arm directives.
Change the non-local labels to .L labels.
Add cfi directives to strcpy.S.

Bug: 18157900

(cherry picked from commit c8bd2abab24afe563240297018c4fa79944f193b)

Change-Id: Ifa1c3d16553d142eaa0d744af040f0352538106c
23 files changed