minor formatting corrections.
add export visibility symbols and set everything to internal visibility by default.
switch to libwallet specific define.hpp
Add wallet symbol define header.
Add exports sufficient to eliminate inconsistent linkage errors.
Add libwallet import.props to libwallet_examples (fixes static build).
switch to libwallet specific define.hpp
switch to libwallet specific define.hpp
Merge pull request #14 from evoskuil/develop

Add wallet symbol define header and exports.
indentation for define.hpp macros
update obslisk import props
Add secp256k1 nuget dependency references to VS files.
add hd_keys.hpp to wallet.hpp
install define.hpp
added hd keys test case based off examples/ file.
convert libwallet to non-openssl hashing functions.
Move hashes to bc, rename deterministic_wallet to electrum_keys, update bc refs.
change parameter to const