Обсуждение: pgsql: varstr_cmp and any comparison function that piggybacks on it can

Log Message:
-----------
varstr_cmp and any comparison function that piggybacks on it can return
any negative or positive number, not just -1 or 1. Fix comment on
varstr_cmp and citext test case accordingly.

As pointed out by Zdenek Kotala, and buildfarm member gothic moth.

Modified Files:
--------------
    pgsql/src/backend/utils/adt:
        varlena.c (r1.169 -> r1.170)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/varlena.c?r1=1.169&r2=1.170)
    pgsql/contrib/citext/expected:
        citext.out (r1.5 -> r1.6)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/citext/expected/citext.out?r1=1.5&r2=1.6)
        citext_1.out (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/citext/expected/citext_1.out?r1=1.3&r2=1.4)
    pgsql/contrib/citext/sql:
        citext.sql (r1.4 -> r1.5)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/citext/sql/citext.sql?r1=1.4&r2=1.5)