Because it does not currently have any measurable benefits.

[[Imported from SVN: r1769]]

[[Imported from SVN: r1768]]

[[Imported from SVN: r1767]]

[[Imported from SVN: r1765]]

Fixes FS#1232
Patch provided by Andreas Lauser.


[[Imported from SVN: r1763]]

Patch by Andreas Lauser.  Thanks!


[[Imported from SVN: r1760]]

[[Imported from SVN: r1759]]

[[Imported from SVN: r1758]]

Improved it such that placement new is only called when necessary.

[[Imported from SVN: r1757]]

[[Imported from SVN: r1756]]

[[Imported from SVN: r1755]]

Previously the two vectors are allocated in
the first call to apply. These got resused in subsequent calls to apply
and are deallocated in the destructor. Using the new mode these vectors are allocated
at the beginning and deallocated at the end of each apply method. This allows
using the same instance of superlu from different threads.

Patch provided by Arne Morten Kvarving. I just added some more
documemtation and a missing initialization.

[[Imported from SVN: r1754]]

[[Imported from SVN: r1753]]

[[Imported from SVN: r1749]]

[[Imported from SVN: r1748]]

Shouldn't subversion prevent such a thing? I even could
not use svn merge to restall the changes of r1739. 
Really weired.

[[Imported from SVN: r1747]]

[[Imported from SVN: r1743]]

[[Imported from SVN: r1742]]

[[Imported from SVN: r1741]]

This solver allows the preconditioner
to between iterations or even be nonlinear.

[[Imported from SVN: r1740]]

[[Imported from SVN: r1739]]

No deprecation needed as I consider these methods internal only.

[[Imported from SVN: r1738]]

[[Imported from SVN: r1737]]

[[Imported from SVN: r1736]]

[[Imported from SVN: r1735]]

[[Imported from SVN: r1734]]

[[Imported from SVN: r1733]]

Patch by Olaf Ippisch

[[Imported from SVN: r1732]]

[[Imported from SVN: r1730]]

Removed superfluous Preconditioner.apply in GMRes, see FS#1201.

(thanks to Uli Sack for the patch)

[[Imported from SVN: r1729]]

[[Imported from SVN: r1728]]

Patch by Matthias Wohlmuth.  Thanks!

[[Imported from SVN: r1726]]

[[Imported from SVN: r1725]]

[[Imported from SVN: r1723]]

not support. As they are by no means needed here due to template
argument deduction, we just remove them.

[[Imported from SVN: r1718]]

avoid "variable unused" warning
in this case using DUNE_UNUSED is okay, since we just want to test the
existence of the copy constructor...

This is FS#1165 patch 2.
(thanks to Andreas Lauser for the patch)

[[Imported from SVN: r1717]]

[[Imported from SVN: r1716]]

[[Imported from SVN: r1715]]

[[Imported from SVN: r1713]]

The actual code is now in dune-common

[[Imported from SVN: r1712]]