* fixing Lirrec's massive load of crap - as usual...

 (I hope he thinks about me some time
  when he has to deal with some other guys crap)

 * output status messages as... right, STATUS
 * on Linux there is no libsfml-main.{a,so}
 * add options to CACHE, so one can actually set them on tools like cmake-gui and ccmake
   and fix "lib X not found, except it's actually there" errors