DB9 connector, and fix some related bugs in serbb_posix.c.
Closes bug #16265: dasa2 does not work under posix
* avrdude.conf.in: New serbb pin numbering; added "siprog"
as an alias for "ponyser".
* serbb_posix.c: New pin numbering, fix some confusion.
* serbb_win32.c: New pin numbering.
The generic and Posix-related parts of these changes have
been contributed by Hanns-Konrad Unger
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@632 81a1dc3b-b13d-400b-aceb-764788c761c2