pgsql: Fix URL generation in headline.

Log Message:
-----------
Fix URL generation in headline. Only tag lexeme will be replaced by space.
Per http://archives.postgresql.org/pgsql-bugs/2008-12/msg00013.php

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
    pgsql/contrib/tsearch2:
        ts_cfg.c (r1.11.4.3 -> r1.11.4.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_cfg.c?r1=1.11.4.3&r2=1.11.4.4)
        ts_cfg.h (r1.4 -> r1.4.4.1)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_cfg.h?r1=1.4&r2=1.4.4.1)
        wparser_def.c (r1.11.4.3 -> r1.11.4.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/wparser_def.c?r1=1.11.4.3&r2=1.11.4.4)
    pgsql/contrib/tsearch2/expected:
        tsearch2.out (r1.11.4.2 -> r1.11.4.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/expected/tsearch2.out?r1=1.11.4.2&r2=1.11.4.3)