fix: remove stray random.seed causing seeding of random number generation;
add random_state; convert rng to use random_state, seed to use random_seed;
seed faster run for examples/mpmap_desolve


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/mystic/mystic@772 968178ea-60bd-409e-af13-df8a517b6005
Merge branch 'master' of https://github.com/uqfoundation/mystic