Sort included headers and remove some empty lines from superlutest.cc and matrixmarkettest.cc.

[[Imported from SVN: r1567]]

MM_SEQUENTIAL were not correctly replaced by #if HAVE_MPI.


[[Imported from SVN: r1566]]

[[Imported from SVN: r1565]]

Christoph's issues.

[[Imported from SVN: r1562]]

[[Imported from SVN: r1561]]

sequential or not.

[[Imported from SVN: r1560]]

[[Imported from SVN: r1554]]

Should fix flyspray #1093

[[Imported from SVN: r1553]]

[[Imported from SVN: r1552]]

Unfortunately DUNE_DEPRECATED does not work before definitions of
template member functions inside the class.

[[Imported from SVN: r1551]]

[[Imported from SVN: r1550]]

[[Imported from SVN: r1549]]

wrapper of SuperLU solver.

[[Imported from SVN: r1548]]

direct solver.
Added a method to AMG to check whether it uses a direct solver on the
coarse level.

[[Imported from SVN: r1547]]

communicate result of coarse solver to other processes, otherwise catching the exception leads to a deadlock

[[Imported from SVN: r1546]]

[[Imported from SVN: r1545]]

Thanks to Uli Sack for the Patch.

[[Imported from SVN: r1544]]

[[Imported from SVN: r1542]]

* use std::abs and std::sqrt instead of fabs and sqrt
* use real_type instead of double to (hopefully) fix probelms with std::complex

[[Imported from SVN: r1540]]

remove tabs from solvers.hh and fix indentation

[[Imported from SVN: r1539]]

[[Imported from SVN: r1538]]

[[Imported from SVN: r1537]]

credits go to Ansgar Burchardt

[[Imported from SVN: r1536]]

[[Imported from SVN: r1535]]

[[Imported from SVN: r1534]]

[[Imported from SVN: r1533]]

* allow extending the dependency operators via inheritance

[[Imported from SVN: r1532]]

[[Imported from SVN: r1531]]

* fix typo in comment

[[Imported from SVN: r1530]]

[[Imported from SVN: r1529]]

[[Imported from SVN: r1528]]

"DOUBLE"
to "SLU_DOUBLE".
Deprecated pre-2005 support of SuperLU.

[[Imported from SVN: r1527]]

[[Imported from SVN: r1526]]

[[Imported from SVN: r1525]]

to dune-istl.

[[Imported from SVN: r1524]]

[[Imported from SVN: r1523]]

[[Imported from SVN: r1522]]

[[Imported from SVN: r1520]]

Fixes flyspray 1014.

[[Imported from SVN: r1519]]

[[Imported from SVN: r1509]]