Rebase and Squash revert commits

Revert "Add optimized S32A_D565_Opaque_Dither blitter."

This reverts commit 0be5719889c18ff4d62676644d6285538934ce0b.

Revert "Add optimization of Skia S32A_Blend blitter"

This reverts commit afeb79981689adb3a92e3e0f27bd6f02237228c0.

Revert "Add optimization of Skia S32A_Opaque blitter"

This reverts commit 37273d0756f754a19f30ba66ae314daa225098a9.

Revert "Add optimized S16_opaque_D32_nofilter_DX blitter."

This reverts commit bb52328dd60b0e2811842a400f09839968de2cea.

Revert "Add shader for Clamp_S32_Opaque_D32_nofilter_DX."

This reverts commit ae764b71a3fcf409c3580dc7f464916043c6eefc.

Revert "Add shader for Repeat_SI8_opaque_D32_filter_DX."

This reverts commit fca1280d2459a0ef1b4624b6fb911598c1a72b3d.

Revert "Add shader for Clamp_SI8_opaque_D32_filter_DX."

This reverts commit aea3acf5a053c49223798406c97f00f7218665c2.

Revert "Add shader for Clamp_S32_Opaque_D32_filter_DX."

This reverts commit 17c4697082131220327a2aeb4a076541de215290.

Revert "Modify sample buffer size for larger displays."

This reverts commit 467950e3c628186fdd7ea843cf18890fcb908238.

Revert "Restore cutil memsetX functions for Cortex-A9."

This reverts commit ec4c3f1611f1645aa488efcb77079cc0ca17dce2.

Signed-off-by: Paul Beeler <sparksco@gmail.com>