SDL2: regenerate configure script.
SDL2: regenerate configure script.

* I made changes to configure.in, but for this to work configure needs
to be regenerated.

Begasus/haikuports,miqlas/haikuports,miqlas/haikuports,haikuports/haikuports,moochris/haikuports,Begasus/haikuports,koletzky/haikuports,Begasus/haikuports,haikuports/haikuports,haikuports/haikuports,moochris/haikuports,nielx/haikuports,nielx/haikuports,koletzky/haikuports,nielx/haikuports,Begasus/haikuports,moochris/haikuports,miqlas/haikuports,koletzky/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports