patch #7896: DFU FLIPv2 programming support
* pgm_type.c: Add the flip2 programmer type.
* config_gram.y: Allow for the usbid keyword in a device definition.
* avrdude.conf.in: Add usbpid values to those Xmega devices where
applicable.
* avrpart.h: Add usbpid device field.
* dfu.c: (New file.)
* dfu.h: (New file.)
* flip.c: (New file.)
* flip.h: (New file.)
* Makefile.am: Add new files.
* doc/avrdude.texi: Document the changes.
* avrdude.1: (Dito.)
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1258 81a1dc3b-b13d-400b-aceb-764788c761c2
Joerg Wunsch