[[Imported from SVN: r1878]]

[[Imported from SVN: r1877]]

[[Imported from SVN: r1876]]

Now works again for more than 2 processors.

[[Imported from SVN: r1875]]

[[Imported from SVN: r1874]]

[[Imported from SVN: r1873]]

[[Imported from SVN: r1872]]

[[Imported from SVN: r1871]]

index of the result is not probe but low.

[[Imported from SVN: r1870]]

[[Imported from SVN: r1869]]

[[Imported from SVN: r1868]]

entries from single linked list.

[[Imported from SVN: r1867]]

[[Imported from SVN: r1866]]

[[Imported from SVN: r1865]]

[[Imported from SVN: r1864]]

[[Imported from SVN: r1863]]

[[Imported from SVN: r1862]]

[[Imported from SVN: r1861]]

[[Imported from SVN: r1860]]

namespace amg is now Amg.

[[Imported from SVN: r1859]]

Introduced breadth first search algorithm to visit aggregates.

[[Imported from SVN: r1858]]

[[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]]