This commit includes a bunch of changes that are working towards being
able to build the Meterpreter source from CMake. Changes include:
* Updated `make.bat` which does the stuff that we need.
* Removed a bunch of stuff from the python extension source tree so that
CMake generator would not include them.
* Moved a few things around in the priv extension.
* Created `CMakeFileLists.txt` for all the projects.
There are a few hacks required in things like stdapi and kiwi to ignore
files that are on disk but shouldn't be included in the build.
Initial testing indicates that sessions run, extensions load, but some
things don't work as intended. It's a start! Still much to do.
