altivec yuv->rgb converterorginal patch by (Marc Hoffman <mmh at pleasantst dot com>)critical fixes by (Reza Jelveh <reza.jelveh at tu-harburg dot de>)
known bugs/issues, which should be fixed ASAP by someone who has a ppc:0..255 vs. 16..235unneeded recalculation of tables...
many small typo and grammar fixesBased on Bernard Leak's mail <bernard 4t brenda-arkle.demon.co.uk>
Originally committed as revision 11001 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
Originally committed as revision 10174 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
test new converter stuff too
Originally committed as revision 6608 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
colorspace converter tests (memory corruption tests at different width/src/dst)quite impressive results only 1 of the 13 rgb->rgb converters fails for the c versions... sadly only 1 of the mmx converters passes though :( ... i feared allready that last mplayerxp merge reversed the bugfixes :((((...