ARM Skia NEON patches - 31 - Xfermode: xfer16
Xfermode: xfer16

This adds support for 16bit Xfermodes. It also tunes the gcc test
macros in xfer32() to add compatibility for gcc > 4.

Signed-off-by: Kévin PETIT <kevin.petit@arm.com>

BUG=
R=djsollen@google.com, mtklein@google.com, reed@google.com

Author: kevin.petit.arm@gmail.com

Review URL: https://codereview.chromium.org/33063002

git-svn-id: http://skia.googlecode.com/svn/trunk/src@12192 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed