Removed old cairo-xlib dependency.
Added WITH_SDL make option and some other make magick.
Merge branch 'master' of https://github.com/Alloyed/mona

Conflicts:
	Makefile
	mona.c

Added WITH_CUDA make variable.
Fixed build with WITH_SDL=off and WITH_CUDA=off
Building WITH_SDL by default.
Fixed README.md to clarify this.
Atomic rewrite of .dna file.
Merge pull request #1 from naodesu/master

Some changes to build without SDL and CUDA.