pgsnmpd - pgsnmpd: put a source code in order.

Log Message:
-----------
put a source code in order.
and release candidate.

Modified Files:
--------------
pgsnmpd:
KNOWNBUG.txt (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/KNOWNBUG.txt.diff?r1=1.2&r2=1.3)
Makefile (r1.17 -> r1.18)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/Makefile.diff?r1=1.17&r2=1.18)
README.pgsnmpd (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/README.pgsnmpd.diff?r1=1.4&r2=1.5)
pgsnmpd.c (r1.21 -> r1.22)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnmpd/pgsnmpd/pgsnmpd.c.diff?r1=1.21&r2=1.22)