2008-08-07  Sebastien Pouliot  <sebastien@ximian.com>

	* Aes.cs: Don't set the (unexisting) FeedbackSizeValue field
	for NET_2_1
	* AesTransform.cs: Remove code for blocksize != 128 bits

2008-08-05  Sebastien Pouliot  <sebastien@ximian.com>

	* Aes.cs: New. Base class for AES cipher.
	* AesCryptoServiceProvider.cs: New. CSP implementation
	of AES. For mono we're reusing the managed AesTransform
	* AesManaged.cs: New. Managed implementation of AES.
	* AesTransform.cs: New. Actual managed code for AES.
	* CngAlgorithm.cs: New.
	* CngAlgorithmGroup.cs: New.
	* MD5Cng.cs: New. Generated code.
	* SHA1Cng.cs: New. Generated code.
	* SHA256Cng.cs: New. Generated code.
	* SHA256CryptoServiceProvider.cs: New. Generated code.
	* SHA384Cng.cs: New. Generated code.
	* SHA384CryptoServiceProvider.cs: New. Generated code.
	* SHA512Cng.cs: New. Generated code.
	* SHA512CryptoServiceProvider.cs: New. Generated code.