[Python-Dev] deprecate dbm module & add bsddb185 module for 2.2.x

[Matthias Klose]

At least on current Debian systems (testing/unstable), the dbm module
cannot be built anymore using the classic ndbm interface. Building
this module using the BSD DB compatibility interface, or the GNU GDBM
compatibility interface, is not an option, because the file format
differs and existing archives cannot be read anymore. I'm unaware of
the situation on other Linux systems and other systems.  Would it be
possible to deprecate the use of the dbm module for 2.3, or is it
still used on many systems?

Would it be acceptable to backport the bsddb185 module to the 2.2
branch?

	Matthias