Tests comparing two gadgets added om raaz-tests
CPortable vs Reference added to raaz-hash-sha
Cipher class added to Primitives
Block Encryption/Decryption implemented
CPortable AES implementation
raaz-cabal addition of the modules for ECB, CBC and CTR
ECB Reference and CPortable implementation
CBC Reference and CPortable implementation
CTR Reference and CPortable implementation
Tests for Ref, ECB, CBC, CTR added