Beta

Changes in xbmc:

different icons for native and RetroRig mode
passing down display settings
clean up debug messages
Debian packaging control file for RetroRig
Splash screen for RetroRig

Changes in mednafen:

changed to SDL2 (experimental!!)
dual head support
Debian packaging contol file for RetroRig
new build script

Changes in RetroRig:
`wget --tries=50 libregeek.org` for all wget's

Tested thoroughly on several scratch installations.