framework for writing simple makefiles for complex tasks

The goals of the kBuild framework:

- Similar behavior across all supported platforms
- Flexibility, don't create unnecessary restrictions preventing ad-hoc solutions
- Makefiles can be simple to write and maintain
- One configuration file for a subtree automatically included
- Target configuration templates as the primary mechanism for makefile simplification
- Tools and SDKs for helping out the templates with flexibility
- Non-recursive makefile method by using sub-makefiles