M2 release branch?

[Alan Conway]

Do we have a descision on making an M2 release branch? C++ is now set to 
move forward on the 0-9 branch and do M2 work on trunk, but it would be  
clearer and much easier for interop testing to have all M2 work on an M2 
release branch and clear the trunk for future work.

Cheers,
Alan.