plpsm - plpgpsm: Skeleton for statement for.

Log Message:
-----------
Skeleton for statement for. This statement needs identify column names in complile time.

Modified Files:
--------------
plpgpsm/src:
gram.y (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/gram.y.diff?r1=1.10&r2=1.11)
pl_exec.c (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/pl_exec.c.diff?r1=1.10&r2=1.11)
plpgpsm.h (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/plpgpsm.h.diff?r1=1.10&r2=1.11)
scan.l (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/scan.l.diff?r1=1.4&r2=1.5)