Remove imd.cpp from the mac build.
Clean up some of the mac scripts.
Whitespace fixes.
Fix savegame loading, broken by mistaken assumption about script
event loading sequence. Closes ticket:4046
Add standing still non-animating animations for helicopters. Animations by Jorzi.
Also fix divide by zero when attempting to draw non-animating animations.
Fix assert failure and wrong action type selected when VTOLs finished
attacking something and are sent back to rearm, and there are no
rearm structures in existence.
Remove iV_DrawImageScaled, made unnecessary by more modern iV_DrawImage2()
Remove separate draw calls from iV_ShadowBox, instead reuse iV_Box().
Alpha test is no longer used. Removing it.
Remove unused code related to old AI sliders.
Remove hard-coded UI box colours. Other misc cleanups forward ported from GUI work.
More c++11 compile fixes.
Add work queue of GFX items class. Will use it to implement deferred drawing in GUI code.
Add compiler switch to compile code as c++11, as this is used by the queue class.
Add graphics queue to widget base code. Port tool tips to new queue system.
Port form and slider widget drawing to queue system.
Remove some unused code
Misc porting to new graphics queue system. This is about as far as I can get
without touching the text drawing code.