opentxs exe: rename vars
opentxs exe: switch to nullptr
opentxs exe: Split in C++ Class
Moved anyoption.h/.cpp to /deps/anyoptions/ (used by opentxs-exe and opentxs-script)
anyoption: Include ExportWrapper instead of OTCommon
Merge pull request #116 from lclc/opentxsCLI

Opentxs CLI cleanup