pgsql: Detoast query in g_intbig_consistent and copy query in

Log Message:
-----------
Detoast query in g_intbig_consistent and copy query in g_int_consistent.
Minor cleanups.

Tags:
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REL8_1_STABLE

Modified Files:
--------------
    pgsql/contrib/intarray:
        _int_gist.c (r1.6 -> r1.6.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/intarray/_int_gist.c.diff?r1=1.6&r2=1.6.2.1)
        _intbig_gist.c (r1.6.2.1 -> r1.6.2.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/intarray/_intbig_gist.c.diff?r1=1.6.2.1&r2=1.6.2.2)