Moved the core source into a new dedicated directory
Since GUI will be added to the source, a need for division came up with
it.
Current files (including in tests in the tests directory) are part of the core of BDragon, so
they have moved to their subdirectory "BDragon.Core".
Merge branch 'master' of https://github.com/MasterMastic/BDragon
I don't know how I got here, Git's high.

Conflicts:
	tests/BDragon.Core/makefile