Modified libzmq project to not copy platform.hpp
Modified inproc_lat project to not copy platform.hpp
Modified inproc_thr project to not copy platform.hpp
Modified local_lat project to not copy platform.hpp
Modified local_thr project to not copy platform.hpp
Modified remote_lat project to not copy platform.hpp
Modified remote_thr project to not copy platform.hpp
Merge pull request #1076 from dmeehan1968/msvc-platform-hpp-no-copy

Remove copy of platform.hpp for MSVC VS2013 builds