will be available in the upcoming avrdude release.
His addition has been implemented by means of a generalized bit-bang
interface that contains the common part between serial and paralle
bit-bang devices, and specialed backends for the serial and parallel
port connections.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@515 81a1dc3b-b13d-400b-aceb-764788c761c2