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
add hd_keys.hpp to wallet.hpp
install define.hpp
added hd keys test case based off examples/ file.
update obslisk import props
convert libwallet to non-openssl hashing functions.
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.