[[Imported from SVN: r3776]]

[[Imported from SVN: r3775]]

handle indexsets that only contain indices also present on other
processes.

Compiles! Not tested yet!

[[Imported from SVN: r3774]]

[[Imported from SVN: r3773]]

[[Imported from SVN: r3772]]

with the following properties:

- writes XML VTK files
- no additional libraries required
- unstructured leaf grid
- point and cell data (i.e. P0 and P1)
- works in parallel (yes you can visualize data computed in parallel !)

Use ParaView 2.4 to display these files.

To do:

- binary output (using base64 encoding)
- name and directory management (parallel, time-dependent produces lots of files)
- nonconforming output for DG
- P2 function output
- testing of vector output (is already implemented)

[[Imported from SVN: r3771]]

ALUGrid upgrade will follow in the next days.

[[Imported from SVN: r3770]]

Needs more field testing.

[[Imported from SVN: r3769]]

[[Imported from SVN: r3768]]

[[Imported from SVN: r3767]]

[[Imported from SVN: r3766]]

ALUGrid macro format.

[[Imported from SVN: r3765]]

There is currently no way to store 2d parametrizations in AmiraMesh,
thus the method simply throws an exception.  But at least this methods
exists and can be compiled now.

[[Imported from SVN: r3764]]

[[Imported from SVN: r3763]]

[[Imported from SVN: r3762]]

[[Imported from SVN: r3761]]

[[Imported from SVN: r3760]]

[[Imported from SVN: r3759]]

[[Imported from SVN: r3758]]

[[Imported from SVN: r3757]]

and every refinement rule be designated by an enumeration value.  And
this was so even if two rules were the same except for orientation.

And it was good.

But the forces of evil made that no rule be without exception, and this
is why the UG method MarkForRefinement has a little mystery argument
'side' (known to the elders as 'userdata'), which chooses the orientation
of anisotropic refinement.  But, lo and behold, only if DIM=2 and
the refinement rule is BLUE.

So if poor infidel me wants to have both orientations of BLUE, I have
to add the 'side' parameter to the custom UGGrid mark() method.  Which
hath herewith been done, carrying a default value of 0.

[[Imported from SVN: r3756]]

[[Imported from SVN: r3755]]

[[Imported from SVN: r3754]]

[[Imported from SVN: r3753]]

[[Imported from SVN: r3752]]

[[Imported from SVN: r3751]]

[[Imported from SVN: r3750]]

[[Imported from SVN: r3749]]

[[Imported from SVN: r3748]]

[[Imported from SVN: r3747]]

[[Imported from SVN: r3746]]

[[Imported from SVN: r3745]]

[[Imported from SVN: r3744]]

[[Imported from SVN: r3743]]

[[Imported from SVN: r3742]]

[[Imported from SVN: r3741]]

- operator<< for screen output of new geometry types
- A cast operator to the old GeometryType.  This way we can
  switch the grid interface methods to the new implementation
  of GeometryType without having to change any other code.

[[Imported from SVN: r3740]]

[[Imported from SVN: r3739]]

[[Imported from SVN: r3738]]

[[Imported from SVN: r3737]]