Merge branch 'feature/shut-up-compiler-warnings-gcc8' into 'master'
Get rid of shadowed/unused variable/typedef gcc-8 warnings.
See merge request !985 (merged)
(cherry picked from commit 6bb97962)
bad650e8 Get rid of shadowed/unused variable/typedef gcc-8 warnings. 0c763c7f Try to make clang happy, too. c389ba85 Constify some more methods in remoteindices.hh. 729504cc Remove unused variable warning for communicationtest without MPI.