mysqlcompat - mysqlcompat: Another 8.3 data type issue...

Log Message:
-----------
Another 8.3 data type issue... using '0' allows comparison
against int or text, since the type isnt determined until
compare time.

Modified Files:
--------------
mysqlcompat:
string.sql (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/mysqlcompat/mysqlcompat/string.sql.diff?r1=1.12&r2=1.13)