Update to 2.2
    
    - New upstream release pycrypto 2.2:
      - Deprecated Crypto.Util.number.getRandomNumber()
      - It's been replaced by getRandomNBitInteger and getRandomInteger
      - Better isPrime() and getPrime() implementations
      - getStrongPrime() implementation for generating RSA primes
      - Support for importing and exporting RSA keys in DER and PEM format
      - Fix PyCrypto when floor division (python -Qnew) is enabled
      - When building using gcc, use -std=c99 for compilation
    - Update optflags patch