pgsql: 1 fix various comparing functions 2 implement gtsvector_out for

Log Message:
-----------
1 fix various comparing functions
2 implement gtsvector_out for use with gevel module (debug GiST indexes,
http://www.sai.msu.su/~megera/postgres/gist/gevel/)

Modified Files:
--------------
    pgsql/contrib/tsearch2:
        dict.c (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict.c.diff?r1=1.7&r2=1.8)
        gistidx.c (r1.5 -> r1.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/gistidx.c.diff?r1=1.5&r2=1.6)
        rank.c (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/rank.c.diff?r1=1.7&r2=1.8)
        ts_cfg.c (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_cfg.c.diff?r1=1.12&r2=1.13)
        tsvector.c (r1.13 -> r1.14)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/tsvector.c.diff?r1=1.13&r2=1.14)
        wparser.c (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/wparser.c.diff?r1=1.6&r2=1.7)