[[Imported from SVN: r1857]]

EnableIfInterOperable::type to EnableIfInterOperable::Type as this is
more consistent with the Dune Programming guidelines.

Please change your code accordingly. The type with small t will be
removed eventually.

[[Imported from SVN: r1856]]

[[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]]

[[Imported from SVN: r1833]]

[[Imported from SVN: r1832]]

[[Imported from SVN: r1831]]

[[Imported from SVN: r1830]]

[[Imported from SVN: r1829]]

[[Imported from SVN: r1828]]

- change error-handling to exceptions

[[Imported from SVN: r1827]]

[[Imported from SVN: r1826]]

list the head point is obsolete. Removed it.

[[Imported from SVN: r1825]]

[[Imported from SVN: r1824]]

[[Imported from SVN: r1823]]

[[Imported from SVN: r1822]]

[[Imported from SVN: r1821]]

[[Imported from SVN: r1820]]

[[Imported from SVN: r1819]]

[[Imported from SVN: r1818]]