Building with ParMETIS 3.2 fails

Building with ParMETIS 3.2 has been failing since revision 7008:

revno: 7008 [merge]
committer: Garth N. Wells <email address hidden>
branch nick: wells
timestamp: Wed 2012-10-17 09:27:33 +0100
message:
  Merge with trunk
    ------------------------------------------------------------
    revno: 7005.1.1
    committer: Garth N. Wells <email address hidden>
    branch nick: wells
    timestamp: Tue 2012-10-16 11:56:48 +0100
    message:
      Split ParMETIS partitioning into two phases (graph building + graph partitioning)

Error message:

[ 34%] Building CXX object dolfin/CMakeFiles/dolfin.dir/graph/ParMETIS.cpp.o
../../dolfin/graph/ParMETIS.cpp: In static member function 'static void dolfin::ParMETIS::compute_partition(std::vector<unsigned int, std::allocator<unsigned int> >&, const dolfin::LocalMeshData&)':
../../dolfin/graph/ParMETIS.cpp:123: error: 'idx_t' was not declared in this scope
../../dolfin/graph/ParMETIS.cpp:123: error: 'xadj' was not declared in this scope
../../dolfin/graph/ParMETIS.cpp:124: error: 'adjncy' was not declared in this scope
../../dolfin/graph/ParMETIS.cpp:148: error: 'METIS_Free' was not declared in this scope
make[2]: *** [dolfin/CMakeFiles/dolfin.dir/graph/ParMETIS.cpp.o] Error 1

If this won't be fixed, we should change the minimum supported version of ParMETIS (in main CMakeLists.txt).