Remove vsync fallback

git-svn-id: https://s.snth.net/svn/neverball/trunk@3983 78b8d119-cf0a-0410-b17c-f493084dd1d7
Port to SDL2

(Thanks to GeeckoDev for getting the ball rolling!)

git-svn-id: https://s.snth.net/svn/neverball/trunk@3984 78b8d119-cf0a-0410-b17c-f493084dd1d7
Implement display selection

git-svn-id: https://s.snth.net/svn/neverball/trunk@3985 78b8d119-cf0a-0410-b17c-f493084dd1d7
Immediately grab input in HMD mode and never let go

git-svn-id: https://s.snth.net/svn/neverball/trunk@3986 78b8d119-cf0a-0410-b17c-f493084dd1d7
Move common conf screen code to share/st_common

git-svn-id: https://s.snth.net/svn/neverball/trunk@3987 78b8d119-cf0a-0410-b17c-f493084dd1d7
Move graphics screen to share/st_common

git-svn-id: https://s.snth.net/svn/neverball/trunk@3988 78b8d119-cf0a-0410-b17c-f493084dd1d7
Update Putt to use Neverball's graphics screen

git-svn-id: https://s.snth.net/svn/neverball/trunk@3989 78b8d119-cf0a-0410-b17c-f493084dd1d7