pginstaller - pginst: Fixed the japanese problem(W2K).

Log Message:
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Fixed the japanese problem(W2K).
W2K require the service pack 4.

Modified Files:
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pginst/lang:
ja.xml (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/ja.xml.diff?r1=1.1&r2=1.2)
languages.projinc (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/languages.projinc.diff?r1=1.3&r2=1.4)