massive reorganization and cleanup!

1. Added some basic docs to Numerical.HBLAS.BLAS
2. enabled -Wall in default build
3. cleanup all the -Wall outside of the LAPACK module
4. moved the ffi wrapper tooling from Numerical.HBLAS.BLAS to
Numerical.HBLAS.BLAS.Internal
5. moved the flopsThreshold constant to its own module