[[Imported from SVN: r927]]

[[Imported from SVN: r926]]

[[Imported from SVN: r925]]

DO not use sequential superlu in parallel mode!

[[Imported from SVN: r924]]

Bugfixed the test. (this is so embarassing...)

[[Imported from SVN: r923]]

There still seems to be a bug in AMG introduced after 1.2, though.

[[Imported from SVN: r922]]

[[Imported from SVN: r921]]

[[Imported from SVN: r920]]

[[Imported from SVN: r919]]

[[Imported from SVN: r918]]

[[Imported from SVN: r917]]

[[Imported from SVN: r916]]

Bernd Flemischs version

[[Imported from SVN: r915]]

Test for implicit size constructor.

[[Imported from SVN: r914]]

Otherwise 

VariableBlockVector v=0

implicitly calls

VariableBlockVector v(0)

which constructsa a vector with 0 elements.

[[Imported from SVN: r913]]

endrowsizes() allocated memory in any case. Therefore if 
the nonzeros were specified in the constructor (which allocated space
for the values and indices) an new allocation occured on the same
pointers.

Now we check whether nnz is already setup.

[[Imported from SVN: r912]]

[[Imported from SVN: r911]]

[[Imported from SVN: r910]]

since 4.3 g++ makes sure  the meaning of names isn't changed.

.------------------------------
namespace ns {
    template <typename T>
    struct foo {};

    struct bar
    {
        typedef foo<double> foo;
    };
}
.-----------------------------

will not compile, you have to use explicitd scoping.

.--         typedef foo<double> foo;
++        typedef ns::foo<double> foo;

In case that you use class foo several times like:

.-----------------------------
    struct bar
    {
        foo<int> f;
        typedef ns::foo<double> foo;
    };
.-----------------------------

The code will also not compile, because foo<int> already pulls
ns:foo into the scope of ns::bar. Again you will have to specify
the scope.

.--         foo<int> f;
++         ns::foo<int> f;

[[Imported from SVN: r909]]

[[Imported from SVN: r908]]

BlockVector v=0
results in a vector of size 0.

[[Imported from SVN: r907]]

[[Imported from SVN: r906]]

[[Imported from SVN: r905]]

[[Imported from SVN: r904]]

[[Imported from SVN: r903]]

[[Imported from SVN: r902]]

[[Imported from SVN: r901]]

[[Imported from SVN: r900]]

[[Imported from SVN: r899]]

unpreconditioned CG.


[[Imported from SVN: r898]]

[[Imported from SVN: r897]]

* use doxy-header/footer.html only wen building with dune-web
* fix #267

[[Imported from SVN: r896]]

[[Imported from SVN: r895]]

[[Imported from SVN: r894]]

[[Imported from SVN: r893]]

[[Imported from SVN: r892]]

Introducing a new static matrix which is a constant of the identity.  Such as matrix can be useful for equations which are the same for all components, e.g., the vector-valued Allen-Cahn equation

[[Imported from SVN: r891]]

[[Imported from SVN: r890]]

[[Imported from SVN: r889]]

[[Imported from SVN: r888]]