plproxy - plproxy: update news and doc for 2.0.5

Log Message:
-----------
update news and doc for 2.0.5

Modified Files:
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plproxy:
NEWS (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/NEWS.diff?r1=1.7&r2=1.8)
plproxy/doc:
syntax.txt (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/doc/syntax.txt.diff?r1=1.4&r2=1.5)