MMCorePy: Add MMCore/Host.cpp to Unix build.
MMCorePy: Add MMCore/Host.cpp to Unix build.

Was missing. Note that build is still broken (even though it does not
explicitly fail), at least on Mac OS X, because of missing libraries
(IOKit, CoreFoundation, and boost.system, I think).

Also removed MMDevice/Property.cpp, which is not needed here.

git-svn-id: 03a8048b5ee8463be5048a3801110fb50f378627@11992 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

kmdouglass/Micro-Manager,kmdouglass/Micro-Manager