Neon optimized implementation of S16_opaque_D32_nofilter_DX

This patch does the following:
* Neon ASM blitter from RGB565 to ABGR8888 without blend.
* Special case for no scaling but the scaling case is almost as fast.

 Copyright (C) ST-Ericsson SA 2010

Change-Id: I0fae80b14aa5a5c7f6ff4c251bc1419ffa0d4751
Signed-off-by: Christian Bejram <christian.bejram@stericsson.com>

Conflicts:
	src/opts/SkBitmapProcState_opts_arm.cpp
New Tests

With corrected buffer size counts for test_scale_nofilter,
test_rotation_affine_filter, and test_perspective_filter.

Change-Id: I5bf8a70c4f58f12279459b1befcd6cdde6895c25

Conflicts:
	bench/Android.mk
	tests/Android.mk
	tests/Sk64Test.cpp