cppcheck: unused functions
cppcheck fixes, use logging in kart_selection.cpp
cppcheck fixes
Merge remote-tracking branch 'upstream/master'
revert changes in race_manager.hpp
Merge pull request #32 from KroArtem/master

Get rid of printf/cout in kart_selection.cpp, cppcheck fixes
Unset AF when not requested

AF was never unset thus making it enabled everywhere even when there was
a 1:1 fragment/texel mapping.
This makes a significant performance boost when AF is enabled.
Fix fog looking weird on transparent.

But mixing alpha with 0 instead of 1.