[[Imported from SVN: r1942]]

For a grid with maxlevel=1 the first leaf was skipped

[[Imported from SVN: r1937]]

[[Imported from SVN: r1923]]

this wont work in parallel computation.

[[Imported from SVN: r1920]]

[[Imported from SVN: r1919]]

[[Imported from SVN: r1914]]

[[Imported from SVN: r1910]]

[[Imported from SVN: r1897]]

[[Imported from SVN: r1893]]

[[Imported from SVN: r1892]]

[[Imported from SVN: r1889]]

Instead there is now a separate class method collapse()

[[Imported from SVN: r1881]]

[[Imported from SVN: r1880]]

[[Imported from SVN: r1879]]

[[Imported from SVN: r1877]]

[[Imported from SVN: r1874]]

[[Imported from SVN: r1873]]

[[Imported from SVN: r1872]]

[[Imported from SVN: r1855]]

[[Imported from SVN: r1854]]

[[Imported from SVN: r1853]]

[[Imported from SVN: r1852]]

[[Imported from SVN: r1851]]

[[Imported from SVN: r1850]]

[[Imported from SVN: r1849]]

[[Imported from SVN: r1848]]

[[Imported from SVN: r1847]]

[[Imported from SVN: r1846]]

[[Imported from SVN: r1845]]

[[Imported from SVN: r1844]]

* virtualrefinement.cc:
  - explicitly initialize base class in copy constructor of
    VirtualRefinementImp::SubEntityIteratorBack
  - use IsTrue<...>::yes() instead of home-grown consrtuct
  - fix "Kontrollfluss erreicht Ende eine nicht-void Funktion" in
    refinementBuilder
* geometry.hh:
  - while at it, fix "Kontrollfluss erreicht Ende eine nicht-void
    Funktion" in operator= of Dune::Geometry.

[[Imported from SVN: r1843]]

further.

[[Imported from SVN: r1842]]

[[Imported from SVN: r1841]]

[[Imported from SVN: r1840]]

[[Imported from SVN: r1839]]

1) we had a false assumption about the HierarchicIterator
2) the leafbegin() wasn't in a consistent state

[[Imported from SVN: r1838]]

[[Imported from SVN: r1837]]

[[Imported from SVN: r1836]]

hierarchicIndexSet().size()

[[Imported from SVN: r1835]]

beyond compilation.

[[Imported from SVN: r1834]]