Log Message:
-----------
scrollable cursor support

this patch needs changes in SPI :-(.

Modified Files:
--------------
    plpgpsm/src:
        gram.y (r1.23 -> r1.24)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/gram.y.diff?r1=1.23&r2=1.24)
        pl_exec.c (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/pl_exec.c.diff?r1=1.17&r2=1.18)
        plpgpsm.h (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/plpgpsm.h.diff?r1=1.17&r2=1.18)

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