bugs:
. get exactly one frame's worth of DAC data each frame
. convert DAC sound ourselves (SDL is broken)
. comm: send and handle pause/unpause packets
. comm support not working

features:
. auto frame skip rate
. hqx i386 asm versions
. configure: test for altivec
. movie captures
. reset game
. change emulation speed (run faster/slower)
. gui menu
. speedup (sound, cpu)
. speed up 2x/3x modes
