deparallelized x264

Closes #19594.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
deparallelized yasm

Closes #19593.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Perforce 2013.1.659207

Closes #20757.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
lua: make sigaction powerpatch default, support --without-sigaction

* update option decls to with/without
* apply sigaction powerpatch by default, unless --without-sigaction
  is passed.

Closes #20679.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
x264: remove trailing whitespace