Alt+F4 support for sdl version (old sdl version doesn't support that directly). Also center the window when start up.
sdl version now reads fontsize from FONTDATA instead of using fontheight directly. The default value is fontheight-1, if it is not provided.
Code/comment clean up.
Try to fix cross initialization issue which certain compilers complain about.
Merge branch 'master' of github.com:CleverRaven/Cataclysm-DDA into sdl-window-fix
Wrap contents of case statements in braces.