Forgot to take out the check for an all zero RHS in the Krylov solvers.  Since this is AMG land, we probably want to run tests with a zero RHS and random initial guess.
Forgot to take out the check for an all zero RHS in the Krylov solvers.  Since this is AMG land, we probably want to run tests with a zero RHS and random initial guess.
pombreda/pyamg,pombreda/pyamg,pombreda/pyamg,pombreda/pyamg