The intended license for the CMake modules is BSD-2-Clause; there's no desire to restrict what can be done with these, and CMake modules are generally 2-clause licensed.
- don't include other find modules - pkgconfig isn't totally necessary, it might work without
- add cmake module to find libpwquality - move checking functions to their own file - some Transifex hackery - stub out the libpwquality check