Generalize AEAD interface to transformations of stuff
Make XTS a Transformation under src/modes

Move AEAD modes to src/modes/aead

Add filters for Transformations (based on original AEAD filters)
Optimize the poly mul in XTS, AES-128/XTS is 2-3x faster on Westmere
propagate from branch 'net.randombit.botan' (head 2ef4863494d7348a0025bbd6733f9485711c86c6)
            to branch 'net.randombit.botan.transforms' (head 5fbaa65afdd25db387274b43092454536246999a)
Move CBC to Transformation API
Use verbose output for runtime selftest failures
Move ECB to Transformation API
Convert CFB to Transformation API
Keeping this buffer persistently greatly helps performance
Convert CTS mode to Transformation API
Simplify handling of CBC/ECB padding and move source to src/modes
Add Cipher_Mode intermediate class. Add missing BOTAN_DLL exports
Add Transformation::provider
Compile fix for gmp module
Remove test code
Update build version to 1.11.5 pre