Repair the bip32 key generator
Add missing const specifiers
Do not use ternary operator
Add a key_formats unit test
Ignore the unit-test binary
Use the checksum system in key_formats.cpp
Use the new endian stuff in hd_keys
Implement hd_key deserialization
fix warning caused by comparing size with an int.
added deserialize/derive/serialize test.
Make the key valid when assigning
Port hd_keys to the new ec_keys