replace auto_ptr by unique_ptr as auto_ptr is deprecated
Merge remote-tracking branch 'upstream/master'
#1156, fix quotes in CMakeLists files, see http://cmake.org/Wiki/CMake/Language_Syntax#Quoting for more info
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Now IA don't fire a cake if the kart is driving too slow. Also correct some comments.
Add a new Gold Driver achievement.
Merge remote-tracking branch 'upstream/master'
Fix a build issue for Travis CI.
revert unique_ptr back to auto_ptr
removed unused functions
Revert "Now IA don't fire a cake if the kart is driving too slow. Also correct some comments."

This reverts commit 9030291340cff5f1786267034cb2040d2088aa8e.
Clean up some minor coding style issues
having fun reverting changes
Poweruplover achievement
Fixed potential crash if RelationInfo should not exist, which I saw
once while a decline was in progress), started some minor refactoring.
Poweruplover achievement
Add patch to mention firing back in tutorial
Merge branch 'master' of https://github.com/gupascal/stk-code into gupascal-master
Fixed some merging issues.
Conflicts:
	data/achievements.xml
	src/achievements/achievement_info.hpp
Merge branch 'master' of github.com:supertuxkart/stk-code