pginstaller - pginst: Remove note about beta in preparation for release

Log Message:
-----------
Remove note about beta in preparation for release

Modified Files:
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pginst/lang:
de_welcome.rtf (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/de_welcome.rtf.diff?r1=1.2&r2=1.3)
fr_welcome.rtf (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/fr_welcome.rtf.diff?r1=1.1&r2=1.2)
pt_br_welcome.rtf (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/pt_br_welcome.rtf.diff?r1=1.3&r2=1.4)
pginst/txt:
welcome.rtf (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/txt/welcome.rtf.diff?r1=1.12&r2=1.13)