As discussed in this thread:

http://mail.python.org/pipermail/python-dev/2010-March/098500.html

The syslog module is using the C argv[0] as the program name, not the python sys.argv[0].  So, in most cases this means that unless you explicitly set a ident, you get "python" as the ident.  Not entirely helpful.

This patch:

 - Makes openlog arguments keyword args.
 - Makes openlog ident argument optional.
 - If ident is not passed to ident, basename(sys.argv[0]) is used.
 - The first call to syslog.syslog() calls ident() with no options
   (if it hasn't previously been called).
 - Variously related documentation changes.

"make test" with this succeeds.

I think this is ready to go into the trunk, but would like a review.  I'll check with the release maintainer about if this is appropriate for 2.7b.

Sean