added LANGUAGE Safe pragma.

Data/Distribution.hs

Data/Probability.hs

Data/SearchTree.hs

Data/SearchTree/Graphviz.hs

Distribution/English.hs

Entropy.hs

Entropy/Cross.hs

Entropy/Guesswork.hs

Entropy/Relative.hs

Entropy/Renyi.hs

Entropy/Shannon.hs

SearchTree/Guesswork.hs

SearchTree/Huffman.hs