TIZEN: Silence cppcheck warning in scanStringUntil()

This is consistent with scanString(), and I have verified that the
included test cases still work.
WINTERMUTE: Fix warning
TSAGE: Fixed playing of scanner tones when switching between characters
TSAGE: Corrected usage of quinn and speaker classes across scenes
TSAGE: Clean up of R2R scene 1550 player position tracking
TSAGE: Variable renaming in R2R scene 1550
TSAGE: Further R2R scene 1550 fields renaming
TSAGE: Further R2R scene 1550 renaming, and fixing tracking junk state
TSAGE: Added code to make newly added inventory items immediately visible
TSAGE: Fix cursor when leaving the scanner dialog
TSAGE: Further cleanup for spaceport scene
TSAGE: Fix to the R2R scene 1550 junk display loop
TSAGE: Silence GCC signed/unsigned warning
TSAGE: Silence GCC warning about variable being shadowed
WINTERMUTE: Fix alpha blending with colormod

This fixes numerous transparency effects in J.U.L.I.A.
WINTERMUTE: Fix colormod with alpha blending

Now apply colormod only to the src color instead of to the dst.
The original code did this inconsistently depending on if the
colormod was 0 or not.
SCUMM: Fix COMI regression, after commit 84d1d28373d782464bd46b10abd6b092f7eb6367.
WINTERMUTE: Fix and clean up BaseSurfaceOSystem::finishLoad()

This fixes a couple of cases which fell through the cracks of the
previous chain of conditions, including 16bpp images and 32bpp images
without alpha. The latter partially fixes bug #3600667.
WINTERMUTE: Simplify string matching
WINTERMUTE: Remove duplicate code