fixup unit test replays

unit test replays were getting corrupted because they were being
saved too late in the process... thanks to gfgtdf for figuring out
what the problem was.
add "break replay with lua random" test
wml test script counts number of passed or failed tests
add errors.log to .gitignore
add noninteractive replay management to controller (for unit tests)
add assertion failure, segfault notes to run_wml_tests
replays return lvl result, treat OOS as game error in noninteractive
fixup wml_test_schedule

the break_replay test now successfully fails.
add fixed_lua_random_replay test
Merge branch 'fixup_unit_test_replays'