Optimize ufixnum by creating a new Register64 class for 64 bit arithmetic without creation of new object per operation and some functions to manipulate raw ints for 8 and 32 bit unsigned arithmetic
Adapt MD4FamilyDigest to the new ufixnum
Adapt 32 bit hashes to new ufixnum
Adapt LongSHA2FamilyDigest to the new ufixnum
Adapt 64 bit hashes to new ufixnum
Adapt SecureRandomBase to new ufixnum