pginstaller - pginst: add the spanish translation.

Log Message:
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add the spanish translation.
Per Mariano Reingart.

Tags:
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REL8_3_STABLE

Modified Files:
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pginst/lang:
languages.projinc (r1.5 -> r1.5.2.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/languages.projinc.diff?r1=1.5&r2=1.5.2.1)

Added Files:
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pginst/lang:
es.xml (r1.1.2.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/es.xml?rev=1.1.2.1&content-type=text/x-cvsweb-markup)
es_welcome.rtf (r1.1.2.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/lang/es_welcome.rtf?rev=1.1.2.1&content-type=text/x-cvsweb-markup)