OSCam svn11518 Emu-r796

-Fixed bug in dvbapi not releasing used descramblers in stapi, coolapi and gxapi boxes
-Increased MAX_STREAM_INDICES back to 32 (it must be equal to MAX_STREAM_PIDS)
-Modified the get_emm_filter_adv() function to accept more arguments
-Cosmetics to module-cccam.c and module-cccam-cacheex.x
-Removed some emu specific code not needed anymore

Emu r796:
-Added a new method for matching powervu keys *
-Dropped unused videoguard and drecrypt modules
-Other small optimizations and improvements