Merge pull request #23 from duff2013/master

more 2 MHz (VLPR) fixes
Add usb_midi_class::setHandleSysEx()

Switched order of parameters as suggested by PaulStoffregen.
Merge pull request #24 from pcbeard/SysEx

Add usb_midi_class::setHandleSysEx()
Fix unused variable warning with speed > 2 MHz
Minor comment cleanup
Fix duplicate definition in German keyboard layout
Add LPTMR definitions
Merge pull request #5 from PaulStoffregen/master

resync