Merge pull request #189 from Aloshi/master

Build EmulationStation with CMake and g++-4.7
Added uninstall option & slight modifications to Dispmanx installation
Fixed installation routine of Emulation Station
Revert "Fixed installation routine of Emulation Station"

This reverts commit 2b0e413af75aa98d1637b13762d6e2a54419380b.
Revert "Revert "Fixed installation routine of Emulation Station""

This reverts commit 1829719dcac9d63c7ffa583f6005360e9354b8db.
Reverted last commit.
Fixed Emulation Station installation
Added GnGeo-Pi 0.85
Added unrar and p7zip to APT package list
Added 7z package
Fixed Megadrive/Genesis extensions, fixed GnGeo-Pi ES command
Temporary hack for circumventing the freezing issue of Emulation Station
Fixed sources for Wolf4SDL
Enhanced function for autostarting Emulation Station (issue #170)
Fix for Emulation Station (issue #195)
Updated Wolf4sdl URL, fixed SNESDev installation
Fixed SNESDev installation
Fix regarding Wolf4SDL (issue #194)
Updated function for installing Dispmanx library
Enhanced the createBinaries script.