- when outputing character to the screen check that we actually have a
character for the charcode supplied. This fixes potential segfault
when user types in some character that isn't in the table;
- don't hog all CPU time when playing level completion sound. This also
makes level completion sound much more less jerky;
- by default use sdl12 library instead of sdl10, because sdl10 is at the
end of its lifecycle and would be retired RSN.
Bump PPORTREVISION to indicate that major changes were made.
0e050332e9