console command fixes #53
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this is motivated by a lockup caused in bl2 calling `PC.ConsoleCommand("x")`
in trying to print the `>>> x <<<` line, we woke the logger thread
it then changed the function flags on `Engine.Console:OutputTextLine`, before getting stuck on waiting for the lock inside `process_event`
at the same time, the main thread tried to print `Command not recognized: x`, also calling `OutputTextLine`
something about the flags having been changed while calling it caused a lockup
fix is to expand the scope of the lock, and only change the function flags while we hold it
incidentally the native call to `OutputTextLine` went through `CallFunction`, figure it's a good idea to lock during it too
…nd it potentially being out of order
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