plproxy - plproxy: Documentation updates from Steve Singer

Log Message:
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Documentation updates from Steve Singer

Modified Files:
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plproxy/doc:
config.txt (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/doc/config.txt.diff?r1=1.4&r2=1.5)
overview.txt (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/doc/overview.txt.diff?r1=1.5&r2=1.6)
tutorial.txt (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/doc/tutorial.txt.diff?r1=1.1&r2=1.2)