Move test directory into the library

The test directory contains library tests and shall be therefore
compiled with the library makefile. The test directory should mirror
the src/ directory structure (non-recursively!).
Add example test for transformation base class.
Add more testing infrastructure and Release/Debug model.
Make debug compilation compile only good code
Add 'test' directory to debug build
Add a few flags and a comment
Move test directory into the library

The test directory contains library tests and shall be therefore
compiled with the library makefile. The test directory should mirror
the src/ directory structure (non-recursively!).
Add example test for transformation base class.
Add more testing infrastructure and Release/Debug model.
Make debug compilation compile only good code
Add 'test' directory to debug build
Add a few flags and a comment
Add CMakeLists for tests plus translation_test
Merge branch 'testing' of https://github.com/Makman2/CE3D into testing
Changed comment.
Minor output changes only
Merge pull request #32 from Makman2/testing

Testing