Proposed Test Architecture.

Currently, the code goes through the same simplification procedures for all integrals and when those fail, tries a few alternate comparison procedures. It would be best if instead, the test suite has a test suite object with the test name, integrand, variables, official result, and a simplification procedure object. The default class would just do what is normally done, but subclasses could override that to provide a custom procedure. Plus, this would allow one to have separate procedures for different integrators.