[Xmonad] [Patch: XMonadContrib] Spiral tidying

[Joe Thornber]

Various patches for the Spiral tile layout.  Now use a fibonacci
spiral rather than one based on the golden ratio - since this always
seems to look better.  The entry in the layouts list in Config.hs
should now read: spiral (1 % 1)

  * [Spiral] add fibonacci spiral
  * [Spiral] remove old spiral code
  * [Spiral] misc tidying
  * [Spiral] divideRects now takes a list of directions to split in
  * [Spiral] Introduce a simpler Rect data type to remove a lot of the
fromIntegrals
  * [Spiral] last rect takes all available space
  * [Spiral] blend in the scale factor so it doesn't have any effect
on the smallest windows

- Joe
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