pginstaller - pginst: Install psqlODBC manually to avoid WiX problems

Log Message:
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Install psqlODBC manually to avoid WiX problems with ODBC registration in merge modules.

Modified Files:
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pginst:
Makefile (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/Makefile.diff?r1=1.4&r2=1.5)
Makefile.config (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/Makefile.config.diff?r1=1.2&r2=1.3)
pginst/wxs:
pginst.wxs (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.11&r2=1.12)