PRINCE: Reduce the scope of several variables in Hero
PRINCE: Reduce the scope of several variables in PrinceEngine
PRINCE: Reduce the scope of several variables in GraphicsMan
PRINCE: rename a couple of variables named "rand"
MADS: Fix loading correct backgrounds during animations
CGE: Add a safeguard in getPage()
DRASCULA: Remove unused static variable

This code was used until commit aaf8b58 that reworked the detection
to support French and German versions.