programming mode. Use 'retry_pulse' in the per-part specification
that can currently take values of 'reset' or 'sck', the default being
'sck' which preserves the previous behaviour. Some newer parts
indicate that /RESET should be pulsed, while older parts say to pulse
SCK.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@212 81a1dc3b-b13d-400b-aceb-764788c761c2