- install all headers to $(prefix)/include/ug

[[Imported from SVN: r8374]]

Reason: there is already a file error.h there, provided by libc6-dev.
And error.h is not used by Dune anyways.

The proper way to fix this would be to make UG look for headers in 
subdirectories, instead of in usr/include directly.


[[Imported from SVN: r8373]]

[[Imported from SVN: r8372]]

only the .h-files in subdirectories of ./ that actually contain
headers.

In particular this means that ./config.h is not installed, and hence
does not have to be removed afterwards.

[[Imported from SVN: r8371]]

[[Imported from SVN: r8370]]

[[Imported from SVN: r8369]]

[[Imported from SVN: r8368]]

This has the effect of not including libparutil.la in liblow?.la.  This is
especially important without --enable-parallel, because in this case
libparutil.la did reference stuff from libparallel.la, which was however not
build.  Now libparutil is included in libparallel and they are both either
build or not build.

[[Imported from SVN: r8367]]

1) use a set to insert each edge only once
2) use the old O(n^2) version when compiling with "C"

[[Imported from SVN: r8366]]

[[Imported from SVN: r8365]]

[[Imported from SVN: r8364]]

library of program multiple times.

[[Imported from SVN: r8363]]

algorithm was quadratic in the number of vertices, while the new
one is linear.  Not surprisingly, this speeds up reading large grids
a lot.  It appears to have been the last remaining quadratic algorithm
used when setting up a std_domain, and reading of very large grids
is now fast.

[[Imported from SVN: r8362]]

don't abort simply because IdentifySideVector has not been debugged and may contain bugs.  Let's try it out.

[[Imported from SVN: r8361]]

[[Imported from SVN: r8360]]

Previously, new items were appended to this list.  Since the end
of the list is not stored this was an O(n) procedure. This patch
changes the behavior such that new items are now inserted before
the first item.  Hence insertion is now O(1), which is very 
important to be able to read very large grids, because boundary
segments are stored in the environment tree.

Before inserting a new item the environment tree would also check whether
an item with the same name was already present.  This was also
an O(N) algorithm.  This check is now enabled only when 'Debug'
is set.



[[Imported from SVN: r8359]]

relations which exist conceptually but are not supported by the
language.

This is NICE!


[[Imported from SVN: r8358]]

[[Imported from SVN: r8357]]

bugfix: replaced spurious #elif by #else.  No idea how this could ever compile.  Thanks to Christoph Grüniger for the hint

[[Imported from SVN: r8356]]

[[Imported from SVN: r8355]]

[[Imported from SVN: r8354]]

[[Imported from SVN: r8353]]

[[Imported from SVN: r8352]]

[[Imported from SVN: r8351]]

[[Imported from SVN: r8350]]

[[Imported from SVN: r8349]]

move ddd stuff into dimension-dependent namespace.  This is needed for proper 3d parallel support in Dune.  Thanks to Andreas Lauser for the patch

[[Imported from SVN: r8348]]

rename END_NAMESPACE to END_UG_NAMESPACE, for increased consistency.  The old macro is still there for backward compatibility

[[Imported from SVN: r8347]]

[[Imported from SVN: r8346]]

[[Imported from SVN: r8345]]

[[Imported from SVN: r8344]]

on 64bit architectures (casts from pointer types) with the AutoTools 
build system.  The old build system used to change the definition of INT
for this.  Not having to do this is more elegant, however, because these
casts really only occur at these three places.

Thanks to Bernd Flemisch and Andreas Lauser for the patch.

[[Imported from SVN: r8343]]

[[Imported from SVN: r8342]]

[[Imported from SVN: r8341]]

[[Imported from SVN: r8340]]

[[Imported from SVN: r8339]]

[[Imported from SVN: r8338]]

[[Imported from SVN: r8337]]

[[Imported from SVN: r8336]]

[[Imported from SVN: r8335]]