SWF standalone fix, init fixes on IE8
Move Flash YCbCr conversion code from AS3 to C

For some reason this is way faster, even though the C is compiled to AS3 bytecode?

Interestingly, the code is unchanged from the AS3 version except for variable declarations. :D
Break out the C-based YCbCr converter
Reuse the ARGB buffer
Drop the AS3 YCbCr, C version compiles down to faster