EMI: Increase MAX_SHADOWS from 5 to 8.
EMI: Reset color when drawing shadow planes.
EMI: Additional conversions from interest/roll to _rot.
EMI: Fix font text centering by using just the kerned width.
Merge pull request #1070 from JoseJX/Camera

EMI: Additional conversions from interest/roll to _rot.
Merge pull request #1053 from Akz-/emi-shadow-fixes

EMI: Shadow fixes
Merge pull request #1071 from JoseJX/FixTextPositions

EMI: Fix font text centering by using just the kerned width.
MATH: Fix typo in gluMathUnProject

Fixes the right click mode in Myst 3
MYST3: Use floating point math to check whether the mouse is in an hotspot

Makes it easier to use smaller hotspots
MYST3: Workaround a data bug in the MATO 32765 script

This could cause a crash under certain conditions.
Most probably with the original as well.
OPENGL: allow compile without OpenGL headers
MYST3: Prevent spotitem fading from overflowing

This fixes the Orchids from Edanna
GRIM: Set the default sprite flags properly