[Rpm-metadata] generate script update

[seth vidal]

Hi,
 I wasn't calling doc.encodeSpecialChars() on contents so &'s weren't
being encoded to &amp; I had noticed that < and > and " were being
handled so I thought it was happening automatically.

Anyway - the script has been updated at:

http://linux.duke.edu/~skvidal/metadata/generate/

Thanks
-sv