While this might be technically possible,maybe, you are only permitted by license to distribute the MCR for programs you wrote and built, and no program can be built with multiple MCR versions.
What benefit do you see from putting two MCR in to a single setup file?
The MCR has the same system requierements as MATLAB. So MCR 7.15 isR2011a which is not supported on Server 2012. Going through the requierements it seems likeR2013a is the first release which supports Server 2012.
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