- 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

SyncModel to force transfer from old GEO db to GModel

getPhysicalNumber(const int &dim, const std::string & name)

A possible fix to crash in

#0  0x0296dab6 in std::_Rb_tree_increment ()
#1  0x002762b3 in std::_Rb_tree_const_iterator<Cell*>::operator++ () at stl_tree.h:351
#2  0x002762b3 in CellComplex::reduction (this=0x1a854d80, dim=2) at CellComplex.cpp:351