anywhere specified to be written by any of the -U requests.
To remain backward compatible with previous versions, disable this
feature if any of the old-style memory specification operations are
specified (-i, -o).
Implement the -D option to explicitly disable the auto erase default.
Deprecate the old-style memory specification options (-f, -i, -I, -m,
and -o) in favor of the new -U option which allows one to operate on
multiple memories on a single command line.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@356 81a1dc3b-b13d-400b-aceb-764788c761c2