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CreateTopologyFromMesh more accurate
Possibility to partition also Faces and not only GModels

	-) Use CCM when 1 to 1 is impossible
	-) Check cavity is closed in the cavity check algo
	-) Better Info/Warning messages 

add support for petsc solvers

added some more topological infos in high order elements (useful for DGM,
still have to be tested)

* removed old code

renamed most gmsh* classes

started to create parallel topology in the mesh

- pretty print code

fix warnings

- moved GUI to FlGui + added experimental QGui to test Qt

- fixed most MSVC and gcc compiler warnings

- converted some remaining tabs to whitespace (that's why the patch is
  so large; please try to remember to indent with 2 spaces and not
  tabs when you commit stuff to CVS)

- merged modified patch from Konstantinos Poulios to allow saving
  physical/partition as element tags in mesh formats that don't
  support them natively