TODOs
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+* support new vesamenu isolinux/syslinux bootsplash
+ -> should simplify multiboot setup
+* if 'grml2usb grml64.iso grml.iso' is invoked there are two identically named boot entries (both "grml")
* support installation of new ISO[s] additionally to already existing grml ISOs on the usb device
-> add "old"/already existing images automatically to bootloader configuration [thx gebi]
* support installation of "dupes", meaning grml2usb grml_2008.11.iso grml_2009.05.iso
- improve error handling wherever possible :) => especially disk full, any other known test cases?
- use 'with open("...", "w") as f: ... f.write("...")'
- use class design (like used in https://fedorahosted.org/liveusb-creator/browser/liveusb)
-* check out what's *really* necessary if someone wants to use only the grml2usb python script
* provide a Windows version (for example via PyQt4)
* provide unit-testing (any ideas for useful/test-able scenarious?)
* provide progress bar when copying files