Tortoise testing: build 'random-seed 0' into DockingFixture
Tortoise testing: more testing of turtle death
Evaluator now accepts CompilerFlags

needed for Tortoise docking tests
in Tortoise docking tests, turn off Optimizer on the NL side

Tortoise doesn't use Optimizer (for now anyway), so in order to
get exactly matching execution order and RNG draws, we need to
turn it off on the NL side too
Tortoise docking tests: beef up TestAgents

including uncommenting now-passing test of "with", fixed
by turning Optimizer off on the NL side
Tortoise docking tests: complain less noisily on RNG mismatch

seeing the expected and actual values of the RNG stateisn't useful,
since RNG states are opaque, so just report the fact of the mismatch
Tortoise testing: redo TestProcedures without turtles

so we don't get distracting test failures here when turtle stuff is
broken
Tortoise testing: add commented-out failing test