Allow linking to system Lua via make STANDALONE=0

Also compile the Lua into the executable. Update README. Use our own OpenAL because the OS X one pops and stutters all over the place :P
So, yeah. You can’t bit shift a 32 bit int so much
Better handling for OK:errors
pall around save so we never leave zombies
Save whenever tapes change
Don’t crash if Spotify can’t load track
Fix attempting to play unresolved tracks

In that event we find the next resolvable track, or we stop().