That should allow for about one million processors.
When that proves to be insufficient I'll gladly
increase the number again.

[[Imported from SVN: r8460]]

Allocate them on the heap instead.  I want't to make the _MAX value
much larger, to accommodate for higher processors numbers.
Allocating arrays of that size on the stack would possibly make
the stack overflow.

[[Imported from SVN: r8459]]

Appearently this originated as a backup of wop.c which ended
up in the VCS by accident.  I hasn't been touched since 1997,
and the code compiles happily without it.

[[Imported from SVN: r8458]]

[[Imported from SVN: r8457]]

[[Imported from SVN: r8456]]

[[Imported from SVN: r8455]]

They are generated by the AutoTools, I don't really know
what they do.

[[Imported from SVN: r8454]]

[[Imported from SVN: r8453]]

[[Imported from SVN: r8452]]

The method for splitting b-tree nodes was just not quite correct.
The new unit test caused valgrind complaints when nodes were split.

This fix has been provided by the DROPS team at RWTH Aachen.
Kudos to Sven Gross and Jörg Grande.

[[Imported from SVN: r8451]]

[[Imported from SVN: r8450]]

[[Imported from SVN: r8449]]

[[Imported from SVN: r8448]]

[[Imported from SVN: r8447]]

Core counts increase every day, and a recent patch has changed
to DDD_PROC and DDD_GID types to allow for larger bit numbers.

It is somewhat unfortunate that there are two places which
specify the default number of bits.

[[Imported from SVN: r8446]]

[[Imported from SVN: r8445]]

[[Imported from SVN: r8444]]

[[Imported from SVN: r8443]]

(we're on the way to exascale computing :-) )

[[Imported from SVN: r8442]]

[[Imported from SVN: r8441]]

[[Imported from SVN: r8440]]

DDD needs to know about the structure of the data types it is
supposed to transfer.  We never told it about the things we added
when compiling for Dune.  This never seemed to cause any trouble,
I guess because all Dune-only data is local anyway.
This patch still adds the extra information.  You never know :-)

[[Imported from SVN: r8439]]

Patch by Markus Blatt

[[Imported from SVN: r8438]]

[[Imported from SVN: r8437]]

[[Imported from SVN: r8436]]

Makes Apple people happy.

Patch by Christoph Grüninger.  Thanks!

[[Imported from SVN: r8435]]

The field is only there for Dune, and Dune only uses it in sequential
grids.

[[Imported from SVN: r8434]]

This allows to compile with -std=c++0x

Thanks to Carsten Gräser for pointing this out.

[[Imported from SVN: r8433]]

Avoids warnings with neuer AutoConf versions.

Patch by Christoph Grüninger

[[Imported from SVN: r8432]]

See Dune FlySpray # 1162

[[Imported from SVN: r8431]]

[[Imported from SVN: r8430]]

InsertElement needs to find the neighbors of a newly inserted element.
Previously, there were two methods: a linear (in time) method which
needs preallocated memory, and a quadratic method with less memory
requirements.  If the grid was small enough, then the linear
algorithm was used, otherwise, it was the quadratic one.
However, the quadratic one takes such a long time as to be effectively
useless.  Hence this patch removes the quadratic algorithm.
If there is not enough space for the linear algorithm, an error
message is produced, which contains instructions on how to increase
the available memory.

[[Imported from SVN: r8429]]

[[Imported from SVN: r8428]]

[[Imported from SVN: r8427]]

This fixes some edge communication bugs for 2d grids.

[[Imported from SVN: r8426]]

This fixes the Dune partitionType method for edges for
levels > 0.

[[Imported from SVN: r8425]]

[[Imported from SVN: r8424]]

This fixes the Dune partitionType method for edges in 2D on level 0

[[Imported from SVN: r8423]]

[[Imported from SVN: r8422]]

[[Imported from SVN: r8421]]