- environment.c (we now have os.putenv)
- sybase (a better one is in contrib/Databases/Sybase.*)
- objc.c (incomplete and unsupportable by us)

try to do the mkdir whenever a new python has been built...

Renamed and, or to and_, or_.
Renamed all internal identifiers so as not to start with '__' (which is
a compiler privilege); remove AIX hack.

Use keyword arg to set verbose flag in test func.