[[Imported from SVN: r4761]]

[[Imported from SVN: r4760]]

product.  Measuring the impact on efficiency gave the same results
as for the older TMP stuff.  When compiled with -O3 (g++ 4.1), there
is no measurable speed difference between the old and the new code.
That is so even though temporary variables had to be inserted.
When compiling without optimization, the new code is faster,
presumably because a standard for-loop is faster than a cascade
of function calls.  Depending on your vector size, this speedup
can be considerable!  For a six-entry FieldVector repeatly computing
norms gets about 40% faster.

This concludes FlySpray issue 46.

[[Imported from SVN: r4759]]

[[Imported from SVN: r4758]]

NDEBUG is not defined. 


[[Imported from SVN: r4757]]

which can be used for void interface methods. 


[[Imported from SVN: r4756]]

DUNE_DEVEL_MODE defined, because using this macro leads to an extra method
call. 



[[Imported from SVN: r4755]]

[[Imported from SVN: r4754]]

[[Imported from SVN: r4753]]

[[Imported from SVN: r4752]]

disable dune libcheck, because AC_TRY_LINK fails, although everythins is OK. Perhaps a libtool problem

[[Imported from SVN: r4751]]

[[Imported from SVN: r4750]]

[[Imported from SVN: r4749]]

[[Imported from SVN: r4748]]

[[Imported from SVN: r4747]]

[[Imported from SVN: r4746]]

five dune-modules. 


[[Imported from SVN: r4745]]

[[Imported from SVN: r4744]]

[[Imported from SVN: r4743]]

module via pkg-config and then asks pkg-config for the include path,
libs, etc.


[[Imported from SVN: r4742]]

tries to find an installed module via pkg-config. If pkg-config finds
an installed module, dunecontrol proceeds, although the module is
dropped from the internal tree, as installed modules don't need to be
built. If pkg-config does not find the module, an error is throughn.
If a dune.module file is found, installed versions of the module are
ignored.


[[Imported from SVN: r4741]]

[[Imported from SVN: r4740]]

link for GRAPE. 


[[Imported from SVN: r4739]]

[[Imported from SVN: r4738]]

[[Imported from SVN: r4737]]

[[Imported from SVN: r4736]]

[[Imported from SVN: r4735]]

[[Imported from SVN: r4734]]

[[Imported from SVN: r4733]]

[[Imported from SVN: r4732]]

[[Imported from SVN: r4731]]

This fix ensures, that for example -I'dune-common' is only added once to
the DUNE_CPPFLAGS. 


[[Imported from SVN: r4730]]

and solve() is chosen.  So far, this was done be specializing  auxiliary helper classes.
I replaced this with simple if (n==...).  One would think that a compiler should be able
to optimize this away.

Indeed: measurements using g++-4.1 showed that there is no speed difference when compiled
with -O3.  When compiled without optimization, the new code is actually about 25%
_faster_ than the old one!  Good for them users of block Gauss-Seidel!

[[Imported from SVN: r4729]]

[[Imported from SVN: r4728]]

[[Imported from SVN: r4727]]

[[Imported from SVN: r4726]]

[[Imported from SVN: r4725]]

[[Imported from SVN: r4724]]

[[Imported from SVN: r4723]]

[[Imported from SVN: r4722]]