using a C++ compiler. Still lots and lots of errors in the modules built by
setup.py, and a bunch of warnings from g++ in the core.

regardless of whether the system getopt() does what we want. This avoids the
hassle with prototypes and externs, and the check to see if the system
getopt() does what we want. Prefix optind, optarg and opterr with _PyOS_ to
avoid name clashes. Add new include file to define the right symbols. Fix
Demo/pyserv/pyserv.c to include getopt.h itself, instead of relying on
Python to provide it.

declarations yet, those come later.

it doesn't recognize a lone dash as a non-flag argument.
Now it does.

have to use a const-correct prototype on BeOS or the compiler gets uppity.

was a single '-'.  Thanks to Andrew Kuchling.