brightness statistics messed up with initial black pic
changed initial values of the brightness statistics
C++ -> C conversation
QP range question solved (very likely 1<=QP<=32 according to arpi)
new experimental vertical deblocking filter
RK filter has 3dNow support now (untested)

Originally committed as revision 2169 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc