Added basic boom engine support.
Added systems icons to GamesManager, they are instaled in the standard icon directory.
Added basic ClrmamePro dat file support to GamesManager.
Doom now haves a default icon, systems use icons installed in the standard icon directory.
Glrmame can search for a game from a file.
Ported MegaDrive to Vala, systems have a displayable name, Doom and MegaDrive use Glrmame.
Removed the Python SNES system, install clrmamepro files in the lib's data directory.
Removed TOSEC and the related files from the Python part.
Removed tosecsystem, updated the Makefile.