prefix - prefix: Operator >(prefix_range, prefix_range) and >=

Log Message:
-----------
Operator >(prefix_range, prefix_range) and >=

Modified Files:
--------------
prefix:
prefix.c (r1.18 -> r1.19)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/prefix/prefix/prefix.c.diff?r1=1.18&r2=1.19)
prefix.sql.in (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/prefix/prefix/prefix.sql.in.diff?r1=1.7&r2=1.8)