New version of the Dreamcast emulator for Linux. Changelog: * Implement more user-friendly GD-Rom changer (closes off #31) * Add recent GD-Rom image tracking * Fix for CDI images with more than 1 track per session * Save render buffers as part of the save state (issue #34) * Show preview screenshot in save state open dialog * Remove gnome dependency (now just depends on GTK 2.0+)