Update The Walrus Mag

Fixes #1193021 [Update recipe The Walrus Mag](https://bugs.launchpad.net/calibre/+bug/1193021)
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version 0.9.36
Add tests for set_metadata()
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Stop using googlecode for file hosting
Update La Nacion (Costa Rica)
Copy calibre releases to my backup hdd
fetch-ebbok-metadata: Fix --opf argument requiring a value
Update Frontline