suzerain: move blas_et_al to subdirectory

Gets a big chunk of unchanging, relatively uninteresting code
cordoned off into its own area.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44979 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: break out blas{,ext},lapack{,ext}

This monolithic header was getting unwieldy.  Separate
the logic into separate headers in anticipation of doing
the same with the compilation units.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44980 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: break out blas{,ext},lapack{,ext}

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44981 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: move blas_et_al to suzerain/

Want the single convenience header out at the library level.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44982 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: isolate blas{,ext},lapack{,ext} tests

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44983 0bd85f0b-c151-43b9-a1e9-27231104551f