Scotch is now built using its own build system which builds
an additional metis.h which conflicts with the metis one so
to have separate include directory settings we also need separate
Make/ structures.
- in preparation for adding an optional '-reconstruct' to a few utilities
re-use as -lreconstruct library
- move related stuff there too
src/decompositionMethods/decompositionMethods
-> src/parallel/decompositionMethods
- added missing namespace qualifiers
