[[Imported from SVN: r4807]]

[[Imported from SVN: r4806]]

- just giving a more verbose error message doesn't solve the problem

- The issue has been solved within UG.  The UG build system now aborts
  when --enable-dune is set but not __cplusplus.  I had just forgotten
  to close the issue.  Beg your pardon.

Please try to avoid unrelated indentation and whitespace changes in
patches, as the diffs become more difficult to read.



[[Imported from SVN: r4805]]

It's my pleasure....


[[Imported from SVN: r4804]]

[[Imported from SVN: r4803]]

[[Imported from SVN: r4802]]

[[Imported from SVN: r4801]]

[[Imported from SVN: r4800]]

[[Imported from SVN: r4799]]

[[Imported from SVN: r4798]]

[[Imported from SVN: r4797]]

[[Imported from SVN: r4796]]

[[Imported from SVN: r4795]]

[[Imported from SVN: r4794]]

[[Imported from SVN: r4793]]

[[Imported from SVN: r4792]]

[[Imported from SVN: r4791]]

Rely on MPI daemons being started.
mpi start scripts not needed any more

[[Imported from SVN: r4790]]

Use simple for loop instead of sed to insert commas.

[[Imported from SVN: r4789]]

Fixed duplicate dependencies.

Fixes Flyspray 198

[[Imported from SVN: r4788]]

Check added whether any modules were found and whether all modules we
depend on are found.

Fixes Flyspray 195

[[Imported from SVN: r4787]]

[[Imported from SVN: r4786]]

Fixes Flyspray issue 192.


[[Imported from SVN: r4785]]

[[Imported from SVN: r4784]]

Use C++ headers instead of C headers

[[Imported from SVN: r4783]]

[[Imported from SVN: r4782]]

[[Imported from SVN: r4781]]

[[Imported from SVN: r4780]]

[[Imported from SVN: r4779]]

Fixed a serious bug. (At least sum was not O.K. when working with an
inout array. We really have to allocate an out array and copy the
results.)

Made mpicollectivecommunication more generic and reduced code duplication.

There are to new functions (allreduce) than can be given a binary
function (e. g. std::plus) representing the calculation.

[[Imported from SVN: r4778]]

The collective operations now work with simple C arrays.

[[Imported from SVN: r4777]]

[[Imported from SVN: r4776]]

[[Imported from SVN: r4775]]

and therefor function calls lost. 


[[Imported from SVN: r4774]]

[[Imported from SVN: r4773]]

[[Imported from SVN: r4772]]

[[Imported from SVN: r4771]]

you can not rightmultiply a (n,m)-matrix
by a (n,n)-matrix but by (m,m)-matrices


[[Imported from SVN: r4770]]

[[Imported from SVN: r4769]]

[[Imported from SVN: r4768]]