qemu: Add qemu-0.15.1 port with native GUI and audio backend.
qemu: Add qemu-0.15.1 port with native GUI and audio backend.

Note that this is the last version that builds without dependencies.
The next version would be 1.0 and it introduces the glib dependency
that I did not manage to get built cleanly.

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