pgsql: Improve support of multibyte encoding: - tsvector_(in|out) -

Log Message:
-----------
Improve support of multibyte encoding:
- tsvector_(in|out)
- tsquery_(in|out)
- to_tsvector
- to_tsquery, plainto_tsquery
- 'simple' dictionary

Modified Files:
--------------
    pgsql/contrib/tsearch2:
        dict.h (r1.4 -> r1.5)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict.h.diff?r1=1.4&r2=1.5)
        dict_ex.c (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict_ex.c.diff?r1=1.6&r2=1.7)
        dict_ispell.c (r1.8 -> r1.9)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict_ispell.c.diff?r1=1.8&r2=1.9)
        dict_snowball.c (r1.8 -> r1.9)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict_snowball.c.diff?r1=1.8&r2=1.9)
        dict_syn.c (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/dict_syn.c.diff?r1=1.7&r2=1.8)
        prs_dcfg.c (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/prs_dcfg.c.diff?r1=1.7&r2=1.8)
        query.c (r1.22 -> r1.23)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/query.c.diff?r1=1.22&r2=1.23)
        query.h (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/query.h.diff?r1=1.6&r2=1.7)
        stopword.c (r1.5 -> r1.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/stopword.c.diff?r1=1.5&r2=1.6)
        ts_locale.c (r1.3 -> r1.4)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_locale.c.diff?r1=1.3&r2=1.4)
        ts_locale.h (r1.3 -> r1.4)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_locale.h.diff?r1=1.3&r2=1.4)
        ts_stat.c (r1.13 -> r1.14)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ts_stat.c.diff?r1=1.13&r2=1.14)
        tsvector.c (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/tsvector.c.diff?r1=1.15&r2=1.16)
        tsvector_op.c (r1.5 -> r1.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/tsvector_op.c.diff?r1=1.5&r2=1.6)
    pgsql/contrib/tsearch2/gendict:
        dict_snowball.c.IN (r1.2 -> r1.3)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/gendict/dict_snowball.c.IN.diff?r1=1.2&r2=1.3)
        dict_tmpl.c.IN (r1.3 -> r1.4)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/gendict/dict_tmpl.c.IN.diff?r1=1.3&r2=1.4)
    pgsql/contrib/tsearch2/ispell:
        spell.c (r1.23 -> r1.24)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ispell/spell.c.diff?r1=1.23&r2=1.24)
    pgsql/contrib/tsearch2/wordparser:
        parser.c (r1.8 -> r1.9)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/wordparser/parser.c.diff?r1=1.8&r2=1.9)
        parser.h (r1.9 -> r1.10)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/wordparser/parser.h.diff?r1=1.9&r2=1.10)