* setSolverCategory is not allowed to alter a const value
* Adjust type of setSolverCategory's set
* Properly document deprecation of get/setSolverCategory

The standard states (8.3.6/4) that adding default arguments in later
function declarations are only valid for non-template functions.
In matrixmarket.hh, the function template loadMatrixMarket is declared
and a default argument for the last parameter is provided. In
owneroverlapcopy.hh, OwnerOverlapCopyCommunication contains a friend
declaration of loadMatrixMarket without the default parameter. If now
owneroverlapcopy.hh is included before matrixmarket.hh, the friend
declaration is the first declaration and the default parameter in
matrixmarket.hh is invalid.
By including matrixmarket.hh in owneroverlapcopy.hh, we make sure that
the declaration which provides the default argument is always the first
one.

This patch removes the assumption that the field_type and / or real_type
can always be implicitly converted to double and can be implicitly
constructed from an int (in constructs like field_type d = 0;).

This patch is required for compatibility with the FLOP counter in PDELab.

With OpenMPI there appeared cases where MPI_Comm_free
was called after MPI_Finalize. This was caused by the
destructor of OwnerOverlapCopyCommunication being called
after MPI_Finalize.
This patch moves the destruction out of the main method.
If MPI 2 functionality is available we also check whether
MPI_Finalize was called before freeing the communicator and
only call free if not.

With OpenMPI there appeared cases where MPI_Comm_free
was called after MPI_Finalize. This was caused by the
destructor of OwnerOverlapCopyCommunication being called
after MPI_Finalize.
This patch moves the destruction out of the main method.
If MPI 2 functionality is available we also check whether
MPI_Finalize was called before freeing the communicator and
only call free if not.

[[Imported from SVN: r1728]]

[[Imported from SVN: r1675]]

Free MPI communicators resulting from the AMG accumulation process when they are not needed anymore.

[[Imported from SVN: r1504]]

[[Imported from SVN: r1482]]

Competed check in.

[[Imported from SVN: r1479]]

[[Imported from SVN: r1475]]

[[Imported from SVN: r1447]]

[[Imported from SVN: r1445]]

[[Imported from SVN: r1423]]

[[Imported from SVN: r1422]]

[[Imported from SVN: r1421]]

[[Imported from SVN: r1399]]

[[Imported from SVN: r1374]]

[[Imported from SVN: r1360]]

[[Imported from SVN: r1347]]

[[Imported from SVN: r1330]]

[[Imported from SVN: r1327]]

nonoverlapping grids.

[[Imported from SVN: r1314]]

multiple index pair with the same global index in IndexSet::merge.
Further more we need to order the pairs according to the global index
AND the attribute of the local indes. Therefore we change the numbers
of the attributes such that owner indices are before the ones with
other attributes.

[[Imported from SVN: r1268]]

* update configure and Makefiles

[[Imported from SVN: r1100]]

communication.

Both Interface and BufferedCommunicator loose their template
parameter. It was not needed and hindered the new implementation.
Sorry for the inconvenience.

Please change your code:
Interface<IndexSet> -> Interface
BufferedCommunicator<IndexSet> -> BufferedCommunicator

[[Imported from SVN: r1084]]

ParMETIS. (The additive version is not yet debugged!!!)
Graph::maxVertex does what it says now
Made index sets accessible in RemoteIndices class.
Fixed some typos.

[[Imported from SVN: r1072]]

[[Imported from SVN: r1069]]

[[Imported from SVN: r1066]]