[[Imported from SVN: r99]]

[[Imported from SVN: r98]]

[[Imported from SVN: r97]]

[[Imported from SVN: r96]]

[[Imported from SVN: r95]]

[[Imported from SVN: r94]]

[[Imported from SVN: r93]]

so not completely usefull. We first need the ISTL traits ... otherwise
we can't have usefull values for ctype=complex<...>.

[[Imported from SVN: r92]]

[[Imported from SVN: r91]]

[[Imported from SVN: r90]]

[[Imported from SVN: r89]]

[[Imported from SVN: r88]]

[[Imported from SVN: r87]]

[[Imported from SVN: r86]]

[[Imported from SVN: r85]]

infrastructure exists now

[[Imported from SVN: r84]]

[[Imported from SVN: r83]]

  include-path even when toplevel-directory is not called 'dune'. On
  platforms/filesystems not supporting symlinks the name of the
  current directory is checked and an appropriate include-path is set
- add two test-related Makefiles

[[Imported from SVN: r82]]

[[Imported from SVN: r81]]

[[Imported from SVN: r80]]

[[Imported from SVN: r79]]

[[Imported from SVN: r78]]

more testing, looks good now

[[Imported from SVN: r77]]

n=0 and n=1 are practically useful. n=2 is already a direct
solver. (May I have still something wrong ...)

[[Imported from SVN: r76]]

does not work yet :-(

[[Imported from SVN: r75]]

[[Imported from SVN: r74]]

[[Imported from SVN: r73]]

[[Imported from SVN: r72]]

[[Imported from SVN: r71]]

found.

[[Imported from SVN: r70]]

Ist noch nicht ausführlich getestet (wie alles hier), liefert
aber erst mal ähnliche Ergebnisse wie CG

[[Imported from SVN: r69]]

ilu0 preconditioner can now be used

[[Imported from SVN: r68]]

[[Imported from SVN: r67]]

[[Imported from SVN: r66]]

[[Imported from SVN: r65]]

[[Imported from SVN: r64]]

[[Imported from SVN: r63]]

- supports operator concept, i.e. you can use e.g. CG with on-the-fly operators
  and preconditioners
- supports parallel preconditioners

[[Imported from SVN: r62]]

[[Imported from SVN: r61]]

[[Imported from SVN: r60]]