Update to use later/latest version of YUICompressor.NET about combres

[buunguyen]

1. I'd prefer Combres to still be signed, so that both weakly & strongly named assemblies can use it. It's unfortunate that YUICompressor.NET isn't signed any longer; bad move from their end, now everyone who needs a trust chain will have to recompile the lib themselves.
2. Shouldn't be a problem. YuiCssMinifier and YuiJSMinifier just performs direct call to the underlying YUI compressors, so just make changes in these 2 classes.
3. Certainly, if there are more/fewer properties, then you only have to update YuiCssMinifier and YuiJSMinifier accordingly. Properties of these classes (in fact, any minifier/filter) are automatically bound to parameters declared in the Combres XML config. Therefore, everything should just work. However, you have to update the documentation in Build/combres/content/App_Data/combres_full_with_annotation.xml so that people aware of the changes.

[buunguyen]

I've pushed 2.3.0.4 which supports latest version of YUICompressor.