prefix - prefix: Cleanup: get rid of useless operators and functions

Log Message:
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Cleanup: get rid of useless operators and functions

Modified Files:
--------------
prefix:
README.txt (r1.8 -> r1.9)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/prefix/prefix/README.txt.diff?r1=1.8&r2=1.9)
prefix.c (r1.34 -> r1.35)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/prefix/prefix/prefix.c.diff?r1=1.34&r2=1.35)
prefix.sql.in (r1.15 -> r1.16)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/prefix/prefix/prefix.sql.in.diff?r1=1.15&r2=1.16)