RTAS side-chain patch

Here are patches to add RTAS side-chain support to JUCE:

 

https://github.com/soundradix/JUCE/commit/489d066e7a83bb46fcc2d0cf1ad7be6c449c5dd3

https://github.com/soundradix/JUCE/commit/433c76bd1d1c11bc50cd0575257cb9112c923103

https://github.com/soundradix/JUCE/commit/8f86089cb3d967329c7d8bc5d6eb49c7fe76208c

 

Feel free to use / merge to JUCE / etc.

Cheers, Yair

Just to make it more clear this patch resolves the following:

- RTAS now works with new just Bus Arrangment,

bool setPreferredBusArrangement (bool isInputBus, int busIdx, const AudioChannelSet& preferredLayout)

(it was making compile errors)

- Side-Chain seems to be properly working under Pro Tools RTAS (tested with Pro Tools 9 Mac/PC)