moving Hash and MAC modules to Raaz.Primitives
arranging stuff in alphebetic order
fixing raaz-tests
fixed the module name for Raaz.Primitives.Hash
reorganized the modules for SHA1 hash
reorganising the modules for SHA256 and SHA224 hashes
reorganising the modules for SHA512 and SHA384 hashes
deleting Raaz.Hash.Sha module
fixed the cabal exports
fixing the module names in sha tests
fixed raaz-executable
fixed Sha utils module
inline pragma defined for the padding functions
moved instance declarations closer to data declaration for SHA512
moved instance declarations closer to data declaration for SHA256
moved instance declarations closer to data declaration for SHA1
fixing tests to use the new module layout
fixing raaz-executables
skeleton raaz package added
exposing the Sha family of hashes