SAGA: Some code cleanup

Files:
modified: /scummvm/trunk/engines/saga/rscfile.cpp (try)
modified: /scummvm/trunk/engines/saga/rscfile.h (try)
modified: /scummvm/trunk/engines/saga/scene.cpp (try)
modified: /scummvm/trunk/engines/saga/sndres.cpp (try)
modified: /scummvm/trunk/engines/saga/music.cpp (try)