Not all compilers allow pointer comparison with anything but the pointer type or NULL! Just wondering when the Level* level should be < 0? I think != NULL is the correct statement.Please correct if not!

Updated Makefiles, merged createFullscreen() and createWindow(), moved scaling to a separate sub-menu.

Separated concepts of the "screen" that is drawn to (now the "canvas"), and the "screen" that is actually displayed. Setting the resolution now works properly with scaling.

optional code which can be selected by the define SCALE

Gp2x/Wiz: Added memset code for clearing the screen
Gp2x: needs smaller samples then the standard

Use a lower sample rate and music effects for Symbian OS. This should perhaps be controlled by a flag? SMALL_DEVICE or LOW_CAPS.