[swfmill] Flash9 support

[Ralf Fuest]

Hello,
I just want to write a short update about the things I worked on for the
past days.

I've added support for some flash 9 tags to swfmill. This includes the
DoABC and DoABCDefine tags and the ABC format that is used to represent
the AS3 code in swf files. 

Another feature, that might be more useful for the majority of users, is
embedding binary data into swf files in simple mode. You can access this
data using AS3 or haXe.

The syntax is similar to the clip tag:
<library>
	<binary id="bin" import="foo.bin"/>
</library>

Ralf