Made OT_ME interface more consistent.
Replaced last 4 int32_t return types with bool
Moved deps/anyoption/anyoption.cpp out of opentxs-client
Removed obsolete inline functions from ot_otapi_ot.hpp
Removed using directives from include files
Moved #defines out of namespace scope
Removed some unnecessary includes and variables
Merge pull request #104 from BugFreeSoftware/commands-cleanup

Commands cleanup
OTAPI_Exec: replace OTCleanup with std::unique_ptr
opentxs-core: remove OTCleanup
Merge pull request #124 from toxeus/removeOTCleanup

Remove OTCleanup
remove unused 'bitcoin-crypto' submodule
add crypto++ submodule and build
move to crypto++ zlib
move to crypto++ base64
replace openssl hash with cryptopp
ignore mac openssl deprecated-declarations
update travis to use system openssl on mac