[[Imported from SVN: r2746]]

[[Imported from SVN: r2743]]

[[Imported from SVN: r2736]]

[[Imported from SVN: r2707]]

[[Imported from SVN: r2706]]

[[Imported from SVN: r2690]]

[[Imported from SVN: r2684]]

[[Imported from SVN: r2592]]

[[Imported from SVN: r2517]]

[[Imported from SVN: r2502]]

[[Imported from SVN: r2490]]

[[Imported from SVN: r2485]]

[[Imported from SVN: r2484]]

Intrduced them!

[[Imported from SVN: r2483]]

[[Imported from SVN: r2470]]

[[Imported from SVN: r2465]]

[[Imported from SVN: r2464]]

This still needs some polishing and then we can come to the speed
comparsion.

[[Imported from SVN: r2462]]

- fixed FlatIterator::equals(...)

[[Imported from SVN: r2461]]

[[Imported from SVN: r2451]]

[[Imported from SVN: r2450]]

[[Imported from SVN: r2440]]

[[Imported from SVN: r2439]]

* Test program
* experiments for Expression Templates for Matrizes

[[Imported from SVN: r2438]]

[[Imported from SVN: r2426]]

[[Imported from SVN: r2421]]

[[Imported from SVN: r2392]]

* changed hasEntity
* added forwarding from Capabilities::Something<const Grid>
  to Capabilities::Something<Grid>

[[Imported from SVN: r2333]]

[[Imported from SVN: r2326]]

arrays and allocator. This should eventually be set to std::size_t to
address the entries of the allocated entries.

Currently dd crashes if size_type is size_t. Therefore it is still int
right now.

[[Imported from SVN: r2312]]

via ptrdiff_t.

[[Imported from SVN: r2307]]

[[Imported from SVN: r2268]]

[[Imported from SVN: r2259]]

[[Imported from SVN: r2258]]

[[Imported from SVN: r2247]]

[[Imported from SVN: r2246]]

[[Imported from SVN: r2245]]

of streams where it belongs: common/test/

[[Imported from SVN: r2243]]

string::find returns string::size_type not int.

[[Imported from SVN: r2242]]

Thus we can use internal properties during the identification of the
aggregate and save space.
And later on during the galerkin product the visited flag can be
represented by std::vector<bool>.

Compiles now and passes the tests.

[[Imported from SVN: r2241]]