Add RARFileSource as internal filter.
Merge pull request #46 from Armada651/rfs

Add RARFileSource as internal filter.
build.bat, mpc-hc_setup.iss : add ICL13 support
Cppcheck fixes (WIP)
remove comment
build.bat: remove the /zip switch which was an alias for /7z
update FFmpeg (n0.8-18888-g7ff1a4b)