Feature/fix parmetisgridpartitioner compilation

Steffen Müthingrequested to merge
feature/fix-parmetisgridpartitioner-compilation into master

While running the dune-grid tests for the 2.4.1 release, I stumbled over test-loadbalancing, which stubbornly refused to work on Ubuntu 14.04. This merge request fixes two things:

  • It makes the partitioner work with ParMETIS 3.x by adding the necessary typedefs for idx_t and real_t.
  • It completely disables the partitioner when running with scotch, because scotch doesn't emulate all of the functions required by it.

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