[Xmonad] Patches: Operations.hs: deobfuscate Tall and use fromMaybe

Here are the patches I didn't include last time I tried. -- Eric Mertens Phone: 503.626.6616, x155 Galois Fax: 503.214.8120 12725 SW Millikan Way Ste 290 http://www.galois.com Beaverton, OR 97005-1691 emertens@galois.com