libgwyscan Code

- ignore generated files

- fixed OpenMP detection and linking for the FLANN example

- made the flann example compile
- linker flags required by flann are hard-coded at this moment

- added a Makefile wrapper to pass targets to the CMake Makefile

- another CMake attempt

- another CMake attempt

- trying to set build directory for CMake

- made it possible to roughly configure flann

- added flann