These macros are redundant. All uses are replaced with the generic
DECLARE_ALIGNED macro instead.
Originally committed as revision 22233 to svn://svn.ffmpeg.org/ffmpeg/trunk
This allows for some simplifications like removing some outer loops
and gives much better performance for thread_count > number of idle CPUs.
Originally committed as revision 20211 to svn://svn.ffmpeg.org/ffmpeg/trunk