Fix "AVR910" typos to "AVR109".
Use spaces instead of tabs where necessary to fix indentation.
Use spaces instead of tabs wherever necessary to fix indentation.
Minor formatting fixes.
Merge branch 'mondalaci-avr910_typos'
Merge pull request #7 from mondalaci/hidclassdevice_whitespaces

Use spaces instead of tabs where necessary to fix indentation.
Extract interface numbers into enums.
Merge pull request #8 from mondalaci/extract-interface-numbers

Extract interface numbers into enums.
Minor documentation corrections.
Replace CDC interface numbers with enums.
Merge pull request #9 from mondalaci/replace-remaining-interface-numbers-with-enums

Replace CDC interface numbers with enums.
Replace remaining MIDI interface numbers with enums.
Merge pull request #10 from mondalaci/replace-audio-interface-numbers-with-enums

Replace remaining MIDI interface numbers with enums.
Only issue the REPEAT instruction in the clone programmer if needed to reduce protocol overhead.
Minor documentation improvements.
Merge branch 'master' of github.com:abcminiuser/lufa
More minor speedups to the AVRISP-MKII clone programmer PDI memory reading code.
Refactor AVRISP MKII Clone PDI/TPI command constants to simplify the driver code.
Use non-abbreviated XPROG/PDI/TPI constant names.
Minor documentation fixes.