Log Message:
-----------
Add Python warnings.showwarning overload.
This makes Python warnings.warn('foo') emit an ereport(WARNING,()).
Modified Files:
--------------
be/src:
pl.c (r1.21 -> r1.22)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/pl.c.diff?r1=1.21&r2=1.22)