Log Message:
-----------
doc updates, and new arithmetic and hash funcs
Modified Files:
--------------
ip4r:
README.ip4r (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/ip4r/ip4r/README.ip4r.diff?r1=1.1&r2=1.2)
ip4r.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/ip4r/ip4r/ip4r.c.diff?r1=1.3&r2=1.4)
ip4r.sql.in (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/ip4r/ip4r/ip4r.sql.in.diff?r1=1.2&r2=1.3)
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
