pgsnap - pgsnap: Add man page, from pollux.

Log Message:
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Add man page, from pollux.

Modified Files:
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pgsnap/pgsnap:
ChangeLog (r1.20 -> r1.21)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsnap/pgsnap/pgsnap/ChangeLog.diff?r1=1.20&r2=1.21)

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