Restructure Algorithms subdir and module names

No subdirs in Algorithms, just the module files

Graphics/Diagram/Gif.hs

@@ -3,7 +3,7 @@
 module Graphics.Diagram.Gif where
 
 import Algebra.VectorTypes
-import Algorithms.ConvexHull.GrahamScan
+import Algorithms.GrahamScan
 import Codec.Picture.Gif
 import qualified Data.ByteString.Char8 as B
 import Data.Monoid