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

Emilie: added functions to remesh a volume

Classification editor detects all closed or open curves

added createtopologyFromMSH to create Topology from list of triangles

Fixed error in line curvatures

- uniformize syntax for parFromPoint/XYZtoU (cf. versions in GFace)
- fix compile

added simple Helhmoltz solver + demo finite element plugin