I have successfully built MCServer as a Win64 binary in MSVC2013 express. Yay! 
It took a bit of tweaking, for some reason CMake insisted on adding a "/machine:x86" flag to all linker commandlines, but after editting CMakeCache.txt it finally gave in.

It took a bit of tweaking, for some reason CMake insisted on adding a "/machine:x86" flag to all linker commandlines, but after editting CMakeCache.txt it finally gave in.