FELIX: using lowercase name for nodesets, because in restart STK cannot correctly import names with uppercase letters.

(git cherry-pick from master)
disc: fmdb - remove deprecated calls to SCUTIL
CMakeList.txt: Set optional build of MPAS Interface for FELIX (Land Ice SciDAC project).
Make interface_with_mpas/Albany_MpasSTKMeshStruct.cpp build only when
ENABLE_MPAS_INTERFACE is on.

In particular, this chance permits a clean shared build.