Fixed parmetis check. Parmetis is only enanbled if the correct
CPPFLAGS are used (just like MPI).

[[Imported from SVN: r5573]]

[[Imported from SVN: r5572]]

[[Imported from SVN: r5571]]

Made tuple_writer available and added a delimiter argument.

[[Imported from SVN: r5570]]

[[Imported from SVN: r5569]]

- buggy (see FS 590)
- crappy
- not supposed to be in dune-common anyways

[[Imported from SVN: r5568]]

[[Imported from SVN: r5567]]

[[Imported from SVN: r5566]]

[[Imported from SVN: r5565]]

[[Imported from SVN: r5564]]

reminder: the problem was
configure.ac:7: warning: ___1_1__CHECKS is m4_require'd but not m4_defun'd
configure.ac:7: warning: ___1_1__CHECK_MODULE is m4_require'd but not m4_defun'd

[[Imported from SVN: r5562]]

[[Imported from SVN: r5561]]

[[Imported from SVN: r5559]]

configure.ac:7: warning: ___1_1__CHECKS is m4_require'd but not m4_defun'd
configure.ac:7: warning: ___1_1__CHECK_MODULE is m4_require'd but not m4_defun'd


[[Imported from SVN: r5558]]

[[Imported from SVN: r5557]]

[[Imported from SVN: r5556]]

[[Imported from SVN: r5555]]

[[Imported from SVN: r5554]]

[[Imported from SVN: r5553]]

[[Imported from SVN: r5552]]

[[Imported from SVN: r5551]]

[[Imported from SVN: r5550]]

Note that the current implementation of the determinant is rather
subobtimal.  While it is rather efficient, it is neither the most
numerically stable way to compute the determinant, nor does it work
for integers.  But I think it is much better than no implementation at
all.

[[Imported from SVN: r5549]]

[[Imported from SVN: r5548]]

also rerun Doxygen when da "modules" file has changed, as used for example by dune grid do seed the module hierachy

[[Imported from SVN: r5547]]

[[Imported from SVN: r5546]]

[[Imported from SVN: r5545]]

[[Imported from SVN: r5544]]

[[Imported from SVN: r5543]]

The file fixedarray.hh is renamed to array.hh, to conform with the name of the class it contains.  A backward-compatibility stub will be checked in in a second

[[Imported from SVN: r5542]]

[[Imported from SVN: r5541]]

[[Imported from SVN: r5540]]

[[Imported from SVN: r5539]]

[[Imported from SVN: r5538]]

[[Imported from SVN: r5537]]

[[Imported from SVN: r5536]]

[[Imported from SVN: r5535]]

[[Imported from SVN: r5534]]

[[Imported from SVN: r5533]]

[[Imported from SVN: r5532]]