pginstaller - pginst: Add feature for initdb (directory can be changed)

Log Message:
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Add feature for initdb (directory can be changed)
Add dialog for initdb parameters (locale, encoding, superuser)
Add custom action that validares selected locale on the system (so we don't break on initdb)

Modified Files:
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    pginst:
        Makefile (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/Makefile.diff?r1=1.2&r2=1.3)
    pginst/wxs:
        dialogs.wxs (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/dialogs.wxs.diff?r1=1.1&r2=1.2)
        pginst.wxs (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.4&r2=1.5)
        uidata.wxs (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/uidata.wxs.diff?r1=1.1&r2=1.2)

Added Files:
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    pginst/ca:
        Makefile (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/Makefile?rev=1.1&content-type=text/x-cvsweb-markup)
        pginstca.c (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c?rev=1.1&content-type=text/x-cvsweb-markup)