Fixed mingw compilation
Merge branch 'master' of https://github.com/supertuxkart/stk-code
Select 'start' as default in gp info screen.
Merge remote-tracking branch 'origin/master-fix'
Merge branch 'master' of github.com:supertuxkart/stk-code
Use a parallel loop for IA

It sighltly helps decreasing stuttering in some area of chocolate.
Remove unneeded functions
Try to put IA in its own thread
Revert "Try to put IA in its own thread"

This reverts commit 2a60a841556a9a6cdd3a259bebd44e95365f8f64.
Reenable billboards
Revert "Use a parallel loop for IA"

This reverts commit 8e333afa99cddf0a4092b780812baee42276d8ab.
Do not set glewExperimental outside of linux
Drop support for GL 3.1  on windows

Fixed pipeline will be used instead
Add a dtor to animated mesh
Use __linux__  macro
Block event for one-element ribbon widget in the same way as multi-element widget.

This fixes problem with pressing left and right arrow in track and GP info screen.
Filtering actions is not needed now
Delete sync object
Fix second texcoord in instanced_object_pass.vert
Fix snb on linux