[firedrake] solver options

Hi all, We have been trying to use the shiny new option to specify a different matrix for the solver, but within LinearVariationalSolver. With this usage, it fails for us, probably because we are mispecifying the options. The following code tries to solve it first using the solve() command, then with LinearVariationalSolver. https://gist.github.com/colinjcotter/fd72f3a838ce46d0fe7d Please can you tell us what we are doing wrong? cheers --cjc