Patch for rfc compliant timezones in pubdate in pymetatime.py

Hi Tim, others.
I found a small bug in Tims pymetatime.py plugin.
Basically, it showed my timezone (CEST) in the pubdate field which is not an allowed timezone in
RFC822.

See http://pyblosxom.bluesock.org/bugs/issue33 for details and the fix.

Dieter

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