Kusuma GBA

Core changes:
- fixed BG2CNT corruption in some cases
- fixed rendering of sprites with invalid OBJ Mode
- fixed 32-bit access to some IO registers
- fixed some unknown messages when loading ELF files
- fixed small error when doing a 16-bit write to palette RAM
- fixed minor bug in CpuFastSet emulation
- fixed some crashes loading GCC 3.0.4 ELF files
- fixed minor problem with CPSR (to be consistent with documentation)
- added single frame stepping (pauses after drawing the next frame)
- BMP screen capture option
Windows changes:
- fixed add cheat dialog disabled buttons
- fixed bug with 32-bit cheats (Gameshark/Internal)
- multiple selection on cheat list dialogs now supported
- easier enable/disable of cheats
- cheat search dialog shows previous search results
- cheat lists now restore enabled/disabled status correctly
- added some new companies to information dialogs
- Map viewer
- Palette viewer
- Memory viewer
- Sprite viewer
SDL changes:
- added development logging option (bios usage, illegal read, illegal writes)
- call stack information (GCC 3+ (ARM mode only) or ARM SDT)