This uncomments the code for the font outline. Now, you will see the
font outline on text that had it in the Flash version, most notably "-
Press ENTER to Teleport -" and the time trial overlay text.
This also fixes a problem with the commented code, where un-centered
text didn't outline properly.
This is similar to what was reverted in 3011911 but this time should use
syntax available even before C++11, tested on Clang with
`-std=c++98 -Wall -pedantic`.
