skeleton raaz-ssh package added.
skeleton package for primitives
added rfcs
some basic types and classes added
added endian safe word types
skeleton test program written
added Bits instance to the endian safe word types
simplified the basic classes

* Got rid of the CryptoInput class
* Simplified the CryptoOutput class and renamed to CryptoBytes.
fixed a documentation flaw
declared a new type class CryptoStore to do endian safe load/store
gotten rid of CryptoBytes type class
now uses unsafeCreate to get a pure version
added the CryptoPtr type
added cryptoAlignment constant
added module for CryptoStore tests
added tests for the endian safe types Word*LE/Word*BE
added the module for cryptographic hashes
added a function to free hash contexts.
added pure hash functions for bytestring types
some documentation fixes