yeay, GPIO button is working
bootloader added
bootloader cleanup, booting to system mode
a basic gptimer abstraction (unfinished)
Merge branch 'master' of github.com:TeamOberland/OberlaenderOS

Conflicts:
	OberlaenderOS/.settings/org.eclipse.core.resources.prefs
added IRQ system. interrupt handler not called for some reason
software-interrupts and system calls working
Merge branch 'master' of github.com:TeamOberland/OberlaenderOS

Conflicts:
	OberlaenderOS/.settings/org.eclipse.core.resources.prefs