Fix: openMPI shared mem comm type

[maelk3]

Describe your changes here:

This PR updates the libsc submodule to the lastest development containing the necessary fix in libsc's CMake build system to close #1109. Some of libsc's types have been deprecated. As a result, modifications had to be made on parts that relied on these MPI types. I think someone with better experience with the SFC schemes can weigh in whether I made the correct modifications.

Closes #1109

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[maelk3]

@holke Thank you for setting up the context that I missed!

[lukasdreyer]

Becomes irrelevant because of the changes in the sc library.

Update to sc develop in #1283