plpsm - plpgpsm: move to contrib format

Log Message:
-----------
move to contrib format

Modified Files:
--------------
plpgpsm/src:
Makefile (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/Makefile.diff?r1=1.5&r2=1.6)

Added Files:
-----------
plpgpsm/src:
magic.c (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/magic.c?rev=1.1&content-type=text/x-cvsweb-markup)
plpgpsm.sql.in (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plpsm/plpgpsm/src/plpgpsm.sql.in?rev=1.1&content-type=text/x-cvsweb-markup)