Changes:
implement support for text input
implement support for sound streaming (SoundStreamHead/SoundStreamHeadBlock tags)
direct support for older swf, no need for gnash any more (fallback to gnash ist still available by setting environment variable LIGHTSPARK_USE_GNASH=1)
PPAPI plugin works again
make llvm dependency optional (disabled by default)
implement flash.system.Worker/WorkerDomain
use libswresample instead of libavresample, if available
reduce memory usage
several performance improvements
add partial support for rtmfp protocol