Properly parse text into lines instead of splitting multiple times in TextField#set text
Shorten reftest runtime by using earlier frames for eq tests

Saves about 15 seconds on my machine, which probably translates to 20-25 seconds on the botio machine.
Enable turbo mode in test harness

Further reduces reftests runtime by a few seconds, and makes timeout-caused intermittent failures much less likely.

I had to disable the 3_joystick test because it's behavior is too much runtime-based. I don't think it has that much value to us, anymore, so that should be ok.
Merge pull request #979 from tschneidereit/master

Speed up reftests