pginstaller - pginst: Added Npgsql to the installation.

Log Message:
-----------
Added Npgsql to the installation.

Modified Files:
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pginst:
Makefile (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/Makefile.diff?r1=1.3&r2=1.4)
Makefile.config (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/Makefile.config.diff?r1=1.1&r2=1.2)
pginst/txt:
welcome.rtf (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/txt/welcome.rtf.diff?r1=1.2&r2=1.3)
pginst/wxs:
pginst.wxs (r1.9 -> r1.10)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.9&r2=1.10)