Add framework for white box testing of libsaft.

I have created a test source file corresponding to each source file in libsaft, with a test function corresponding to each function there. Assuming that the framework is sound, the next task is to populate the tests. 
Questions: 
1 Do you want a --verbose flag so that output can be suppressed?
2 Do you want to count successes and failures rather than just doing an OR on errors?