patch #7686 Updating buspirate ascii mode to current firmware, use AUX
as clock generator, and setting of serial receive timeout
* buspirate.c: added paged_write, changed binary mode setup/detection,
added clock output on AUX pin
* avrdude.1: updated documentation
* doc/avrdude.texi: updated documentation
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@1052 81a1dc3b-b13d-400b-aceb-764788c761c2