pginstaller - pginst: Add new contrib modules in PG 8.4

Log Message:
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Add new contrib modules in PG 8.4

Modified Files:
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    pginst/ca:
        pginstca.c (r1.128 -> r1.129)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.128&r2=1.129)
    pginst/wxi:
        guid.lst (r1.45 -> r1.46)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxi/guid.lst.diff?r1=1.45&r2=1.46)
    pginst/wxs:
        dialogs.wxs (r1.74 -> r1.75)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/dialogs.wxs.diff?r1=1.74&r2=1.75)
        pginst.wxs (r1.235 -> r1.236)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.235&r2=1.236)