In this function the NVM enable bit in TPISR is written to zero, like
described in AVR918. The reset line is released in avrftdi_close().
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1149 81a1dc3b-b13d-400b-aceb-764788c761c2
Device identification is possible tested under OS X 10.6.8 with an
FT4232H and ATtiny10.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1145 81a1dc3b-b13d-400b-aceb-764788c761c2