Fixed line endings.
Fixed compiler warnings.
Now each PlayerProfile has a (currently still called) CurrentUser
which manages online connection data. Work-in-progress to use
only one object for all player data (instead of two atm: PlayerProfile
and CurrentUser).
Added stack trace to LeakCheck on windows. Re-enabled stack
trace printing (though off as default).
Merge branch 'master' of github.com:supertuxkart/stk-code

Conflicts:
	src/graphics/render.cpp
	src/graphics/shaders.cpp
	src/graphics/stkmesh.cpp
Fixed more conflicts, removed compiler warnings.