* app/composite/gimp-composite-{mmx,sse,altivec,vis}-{installer,test}.c:
  regnerated

* app/composite/gimp-composite-sse.c
  (gimp_composite_overlay_rgba8_rgba8_rgba8_sse): fixed (rewrote)

* app/composite/make-installer.py:
  command line option --iterations to set the number of iterations for a test.
  command line option --n_ixels to set the number of pixels for a test.

* app/composite/gimp-composite-mmx.c
  (gimp_composite_grain_merge_rgba8_rgba8_rgba8_mmx): fixed (rewrote)
  (gimp_composite_overlay_rgba8_rgba8_rgba8_mmx): fixed (rewrote)
  (gimp_composite_value_rgba8_rgba8_rgba8_mmx):
	  new testing shows it to be broken (temporarily removed from use)