This patch adds support for the Frodo emulator to the testbench.
Note: This requires at least commit 1f5bba4 from the Frodo repository (https://github.com/cebix/frodo4/commit/1f5bba4a60b1ac5dc830fb1b2646971d4741237b). Earlier versions, including the official releases V4.4 and below, don't have the needed support for running automated tests.
Great - applied in r45365
Would be nice if you could add some option to Frodo so it starts minimized (or even headless), that would make it much more convenient (testbench can run in background while doing other things)