ZVISION: Add documentation to SaveManager
ZVISION: Add documentation for RlfAnimation
COMMON: Use unused variables in coroutine macros.

This should fix couple of hundreds of Coverity detected defects.
AUDIO: Simplify SCI inFastForward flag by moving it to MidiParser
AVALANCHE: Some cleanup and comment modifications.
AVALANCHE: Remove useless code.
AVALANCHE: Mostly cosmetic modifications in avalot.cpp.
AVALANCHE: More clean up, removement of dead code.
AVALANCHE: More clean up, removement of dead code, some rearranging.
NEVERHOOD: Split the sprites in module 2800 into a separate file
NEVERHOOD: Document two resources used in game menus
SCI: Add detection entry for the German version of RAMA
SCI: Add source of the checksums for RAMA German
AVALANCHE: Silence GCC warnings and repair Scrolls::scrollModeNormal().
AVALANCHE: Revise Graphics::drawPicture().
SCI: sfx/music priority int16 fixes bug #3615038

it seems that sound system up till SCI0_LATE uses int16, afterwards it seems they changed to byte
main music object (conMusic) in Laura Bow 1 uses -1 as priority. This was truncated to 255 till now, which resulted in many sound effects not getting played, because those used priority 0
SCI: abbrev. ffs to FE and priority check fix
AVALANCHE: Silence more GCC warnings.
SCI: Handle !fireEvents in processEvent
AVALANCHE: Change byte to unsigned int in for loops.