pgsql: Change FETCH/MOVE to use int8.

Log Message:
-----------
Change FETCH/MOVE to use int8.

Dhanaraj M

Modified Files:
--------------
    pgsql/src/backend/commands:
        portalcmds.c (r1.51 -> r1.52)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/portalcmds.c.diff?r1=1.51&r2=1.52)
    pgsql/src/backend/executor:
        spi.c (r1.159 -> r1.160)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/spi.c.diff?r1=1.159&r2=1.160)
    pgsql/src/backend/parser:
        gram.y (r2.559 -> r2.560)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y.diff?r1=2.559&r2=2.560)
        scan.l (r1.135 -> r1.136)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/scan.l.diff?r1=1.135&r2=1.136)
    pgsql/src/backend/tcop:
        postgres.c (r1.503 -> r1.504)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/postgres.c.diff?r1=1.503&r2=1.504)
        pquery.c (r1.107 -> r1.108)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/pquery.c.diff?r1=1.107&r2=1.108)
    pgsql/src/include/executor:
        spi.h (r1.55 -> r1.56)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/executor/spi.h.diff?r1=1.55&r2=1.56)
    pgsql/src/include/nodes:
        parsenodes.h (r1.326 -> r1.327)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/parsenodes.h.diff?r1=1.326&r2=1.327)
    pgsql/src/include/tcop:
        pquery.h (r1.37 -> r1.38)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/tcop/pquery.h.diff?r1=1.37&r2=1.38)
    pgsql/src/include/utils:
        portal.h (r1.67 -> r1.68)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/portal.h.diff?r1=1.67&r2=1.68)