stackbuilder - installers: Set string values, not keys to the version

Log Message:
-----------
Set string values, not keys to the version number

Modified Files:
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installers/PgOleDB:
installer.wxs (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/installers/PgOleDB/installer.wxs.diff?r1=1.1&r2=1.2)
installers/pgRails:
installer.wxs (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/installers/pgRails/installer.wxs.diff?r1=1.5&r2=1.6)