plproxy - plproxy: replace select() with poll() to allow large fd values

Log Message:
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replace select() with poll() to allow large fd values

Modified Files:
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plproxy:
Makefile (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/Makefile.diff?r1=1.16&r2=1.17)
plproxy/src:
execute.c (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/execute.c.diff?r1=1.11&r2=1.12)

Added Files:
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plproxy/src:
poll_compat.h (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/poll_compat.h?rev=1.1&content-type=text/x-cvsweb-markup)