Building native code with CMake

Due to several issues with building Octclipse's c++ code with GNU Autotools we decided to migrate the build process to CMake.

Advantages:
No need to install MSYS on Windows platform
Unified build process for Linux, Windows and MacOs
Less code
Works in ReactOS (saves money for testing under Windows)

Disadvantages:
There was no CMake support in Maven NAR plugin (fixed)
Manual CMake installation is needed