[[Imported from SVN: r7079]]

[[Imported from SVN: r7078]]

Patch by Andreas Lauser.  Thanks!

[[Imported from SVN: r7076]]

[[Imported from SVN: r7075]]

[[Imported from SVN: r7074]]

[[Imported from SVN: r7072]]

BTW: Currently they are not at all activated in dune-common.

[[Imported from SVN: r7069]]

Fixed function call in test code, because indexSet_ is a pointer. Clang complained.

[[Imported from SVN: r7068]]

Add support for boost::hash

This patch adds boost::hash as a fallback option for Dune::hash
if neither std::hash nor std::tr1::hash can be found. We only
have to include the appropriate header and import the name into
the Dune namespace, as the built-in extension mechanism of boost::hash
will automatically pick up the global hash_value() functions.

To test whether the mechanism actually works, the patch also adds
boost::hash to the list of hash implementations tested in
bigunsignedinttest.

Kudos to Steffen Müthing, see FS#1192

[[Imported from SVN: r7067]]

Make bigunsignedint hashable using Dune::hash

This patch adds the required hooks to enable hashing of bigunsignedint
and makes sure the hasher can be invoked in bigunsignedinttest.

Making bigunsignedint hashable also makes it possible to use hash-based
containers for EntityIDs with YaspGrid and SGrid, as those grids implement
the EntityID as a plain bigunsignedint.

The patch also adds a little test to bigunsignedinttest, trying to hash
a bigunsignedint with Dune::hash as well as any of the detected backends
(std::hash and std::tr1::hash).

Kudos to Steffen Müthing, see FS#1192

[[Imported from SVN: r7066]]

Add basic support for hashing using Dune::hash

This patch introduces the functor Dune::hash in a similar manner to
other C++11 functionality by importing the definition from namespace std.

Apart from that, the patch also provides some basic functionality to simplify
making user-defined types hashable, in particular functions for combining hashes
and hashing iterator ranges as well as a mechanism for defining the struct
specializations required by std::hash and std::tr1::hash in the correct namespace.

The current implementation will first try to use std::hash and, if that fails,
attempt to fall back on std::tr1::hash. If that is not available either, hash
support is disabled as there is no homegrown fallback for now.
The extension mechanism will register the type with both std::hash and std::tr1::hash,
if available. This should make it possible to use unordered_{set,map} from both C++11
and TR1 without having to specify a custom hasher.

Kudos to Steffen Müthing, see FS#1192

[[Imported from SVN: r7065]]

Remove cast operator that caused Clang warnings.
This fixes FS#1207.

Kudos to Ansgar Burchardt for the patch.

[[Imported from SVN: r7064]]

Ignore eigenvaluetest.
Reordner member variable assignments to avoid pedantic warnings in
shared_ptr.
Only activate boundary checking in dynmatrixtest if not already active.

[[Imported from SVN: r7063]]

[[Imported from SVN: r7062]]

Capabilities to compute eigenvalues on non-symmetric matrices
Code contributed by Arne Morten Kvarving.

[[Imported from SVN: r7061]]

[[Imported from SVN: r7060]]

[[Imported from SVN: r7058]]

Add check for libgmpxx.
It should not happen but I had the problem with two systems (Mac OS X
and Hermit XE6) that gmpxx.hh was found but no libgmpxx.

[[Imported from SVN: r7057]]

[[Imported from SVN: r7056]]

see FS#1055 for details


[[Imported from SVN: r7055]]

[[Imported from SVN: r7053]]

[[Imported from SVN: r7052]]

once. Improved help string.

[[Imported from SVN: r7051]]

Forced initializing to zero.
Compiles with clang again.

[[Imported from SVN: r7049]]

Support counting even if the pointer type is converted to a compatible
base class.

Previously

class A{};
class B: public A{};

shared_ptr<A> b(new B);
shared_ptr<B> b(a);

b.get_count()==1 && b.get_count()==1 would wrongly hold true.

[[Imported from SVN: r7047]]

base class.

Previously

class A{};
class B: public A{};

shared_ptr<A> b(new B);
shared_ptr<B> b(a);

b.get_count()==1 && b.get_count()==1 would wrongly hold true.

[[Imported from SVN: r7046]]

Make test runs through again.

[[Imported from SVN: r7045]]

(Support type conversion for shared_ptr. Needed for gcc-4.1.)

[[Imported from SVN: r7043]]

[[Imported from SVN: r7042]]

[[Imported from SVN: r7041]]

test initialization from nullptr
fix bool cast of Dune implementation

[[Imported from SVN: r7040]]

[[Imported from SVN: r7039]]

[[Imported from SVN: r7038]]

Rename Power_m_p to StaticPower, which is a bit more telling, and conforms better to the Dune naming scheme

[[Imported from SVN: r7037]]

Good intentions, but not very elegantly done.  Too many people
got annoyed by the warning message.

[[Imported from SVN: r7036]]

Improve METIS test, tested with versions 4.0.3 and 5.0.2.

[[Imported from SVN: r7035]]

Add excplicit cast from double literal 0.5 to field_type to avoid Clang warnings.

[[Imported from SVN: r7034]]

Taken from hcube.cc in dune-grid.

We may want to unify the naming eventually.

[[Imported from SVN: r7033]]

There are lots of power implementations all over our code.
This is the first step of some cleanup.  It moves the class Power_m_p
from misc.hh (like who's ever gonna find it there...) to a separate
header power.hh.  Other implementations will be collected there as
well, if appropriate.

With the patch, including misc.hh will issue a cpp warning that people
who include misc.hh only for Power_m_p should now include power.hh
instead.  This is not great, because it also affects people who include
misc.hh for something else.  Bear with this for a while; I couldn't
think of a better solution.

[[Imported from SVN: r7032]]

[[Imported from SVN: r7031]]