Add emit map to object pass 2 shader
Merge branch 'master' of https://github.com/supertuxkart/stk-code
Detect mesa version.
Removed unnecessary c_str().
Fix crash when track is not found.
Fixed crash in creating user screen, which occured after rename player.

It's a bit quick and lazy fix. Probably other variables should be cleared too.
Remove unecessary files.
Fix memory leak found by vlj
Fix build