FULLPIPE: Fix stupid c/p error. CID 1063216
FULLPIPE: Fix unneeded check. CID 1063206
FULLPIPE: Fix uninitialized class variables
FULLPIPE: Remove unused class variable. CID 1063191
FULLPIPE: Initialized class variables. CID 1063198
FULLPIPE: Initialize class variable
FULLPIPE: Initialize class variable in constructor. CID 1090697
EVENTS: Initialize class variable. CID 1002944
TSAGE: Further work on R2R keypad area sub-scene
SCI: fix music start code fixes eq2 bug #3037267

we start at offset 10 for sound SCI1 games. This is hardcoded in the interpreter. Also removing not handling signals on tick 0. This fixes Eco Quest 2 / Gonzales dancing in room 530. Thanks to wjp for the help.
SCI: revert fix music start code

add workaround for eq2
the issue is known, but can't be properly fixed without rewriting the midiparser into a channel specific parser
previous commit caused issues in kq5/french and others
TSAGE: Further bugfix and renaming for R2R Flub maze
TSAGE: Bugfixes and renaming for R2R cell and surrounds
TSAGE: Cleanup and bugfixes for the R2R Vent Maze
TSAGE: Renaming and cleanup for R2R Autopsy and dormitory rooms
TSAGE: Further bugfixes for ARM base escape
WINTERMUTE: Match type of angle constant to struct in TransformStruct, silence warnings
WINTERMUTE: Add support for additive/subtractive blending in TransparentSurface
WINTERMUTE: Pass blendMode to blit() in RenderTicket.
WINTERMUTE: Remove asserts in Blend-functions in TransparentSurface.