* some modifications to allow gcc to compile same code for -fPIC

  - introduced MOVQ_WONE, MOVQ_WTWO
* unrolled put_pixels_clamped_mmx
* added .baling where the jump address would be compiled on odd address
* added some testing code to disable all these routines (for time measurement)


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@308 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b