and not directly from DiscreteFunctionInterface anymore.  Also, the level
information moved from Lagrange... to Discrete...Interface.

[[Imported from SVN: r1222]]

[[Imported from SVN: r1221]]

[[Imported from SVN: r1220]]

[[Imported from SVN: r1219]]

[[Imported from SVN: r1218]]

[[Imported from SVN: r1217]]

refinement:
- LOCAL: Local grid refinement as you would expect it
- COPY: As local, but unrefined elements are copied along to the next
        level.  That way each level completely covers the computational
	domain.
- COLLAPSE: After refinement, the grid is collapsed into one single
        grid level.

You can change the refinement mode at any time using the methode
setRefinementType().

[[Imported from SVN: r1216]]

[[Imported from SVN: r1215]]

[[Imported from SVN: r1214]]

[[Imported from SVN: r1213]]

[[Imported from SVN: r1212]]

up to 3x3.  Also, operator<< is visible now from doxygen.

[[Imported from SVN: r1211]]

[[Imported from SVN: r1210]]

[[Imported from SVN: r1209]]

[[Imported from SVN: r1208]]

missing in test app

[[Imported from SVN: r1207]]

[[Imported from SVN: r1206]]

[[Imported from SVN: r1205]]

FieldVector<OneDCType, 1> pos_;

[[Imported from SVN: r1204]]

[[Imported from SVN: r1203]]

[[Imported from SVN: r1202]]

[[Imported from SVN: r1201]]

[[Imported from SVN: r1200]]

indices for calculating the size of the interface.

[[Imported from SVN: r1199]]

[[Imported from SVN: r1198]]

[[Imported from SVN: r1197]]

directory with relative ones.
Removed __ from defines.

[[Imported from SVN: r1196]]

[[Imported from SVN: r1195]]

[[Imported from SVN: r1194]]

[[Imported from SVN: r1193]]

- Bugfix: vertex numbering for hexahedra was wrong in operator[]

[[Imported from SVN: r1192]]

[[Imported from SVN: r1191]]

according to the distributed indexsets and directly sends and receives
them using nonblocking communication with persistent MPI_Requests.

Tests redistributing and agglomerating a distributed array (See
indicestest.cc in directory test)

[[Imported from SVN: r1190]]

[[Imported from SVN: r1189]]

[[Imported from SVN: r1188]]

[[Imported from SVN: r1187]]

[[Imported from SVN: r1186]]

[[Imported from SVN: r1185]]

The method returns a boundary type for a given boundary id.
The function spaces need a parameter class which makes this mapping and the
parameter class has to be defined by the user.

[[Imported from SVN: r1184]]

[[Imported from SVN: r1183]]