add optdepends; use Ninja instead of Make
add optdepends; use Ninja instead of Make

(as per PR review)
stahta01/MINGW-packages,JPeterMugaas/MINGW-packages,Alexpux/MINGW-packages,JPeterMugaas/MINGW-packages,stahta01/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,stahta01/MINGW-packages,Alexpux/MINGW-packages,JPeterMugaas/MINGW-packages,oroppas/MINGW-packages,oroppas/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,Alexpux/MINGW-packages,oroppas/MINGW-packages,fabiangreffrath/MINGW-packages,fabiangreffrath/MINGW-packages,lhmouse/MINGW-packages,oroppas/MINGW-packages,oroppas/MINGW-packages,oscarfv/MINGW-packages,fabiangreffrath/MINGW-packages,fabiangreffrath/MINGW-packages,lhmouse/MINGW-packages,stahta01/MINGW-packages,Alexpux/MINGW-packages,oscarfv/MINGW-packages,JPeterMugaas/MINGW-packages,JPeterMugaas/MINGW-packages,Alexpux/MINGW-packages,stahta01/MINGW-packages,oscarfv/MINGW-packages,Alexpux/MINGW-packages,fabiangreffrath/MINGW-packages,JPeterMugaas/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,lhmouse/MINGW-packages,fabiangreffrath/MINGW-packages