to get the history capabilities working yet, but even so, it does
better handling of the prompt and strips newlines for us, so it's
still a win.
Add a few new commands for terminal mode: help, sig, part, erase.
Display rudimentory help using the help command.
Add some function prototypes.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@36 81a1dc3b-b13d-400b-aceb-764788c761c2