Core changes:
- fixed bugs on ELF clean up
- improved CodeBreaker 0xDxxxxxxx code support
- updated Scale2x filter to version 2.0
- improved memory timing
- added support for z2 (delete break on write) so that gdb can use break on write
- added search for base language dll
- fixed GDI problems with selected bitmap being deleted
- added JPEG and PNG support for skins
- changed import/export battery file to default to battery directory
- fixed the translation bug with viewers
- fixed the GB map view flickering
- fixed skin bugs
- now it exits when closing the window
- added a new interface using GTK+, which implements a first part of the Windows version