[release] Ignore .trs files generated by recent AutoTools test system
(cherry picked from commit 723fb41f9e0db4cc888d68b3101a79fe559e3573)

Signed-off-by: Markus Blatt <markus@dr-blatt.de>
[CMake][release] Improve FindPsurface.cmake.

Fix config.h.cmake.
Add psurface 2.0 test, works only for installed ones without prefix.
(cherry picked from commit b1d5240eda60d95a8657a9c7ca708e2433c5f5cf)

Signed-off-by: Markus Blatt <markus@dr-blatt.de>
[release,documentation] Fix documentation of PartitionIteratorType.

Surprisingly, the iterators over the partition type Overlap_Partition
and OverlapFront_Partition also visit iterior and border entities.
According to our partition check (dune/grid/test/checkpartition.cc) this
is even mandatory. Unfortunately this neither reflected in our papers
nor in the doxygen documentation. This patch at least documents it the
doxygen documentation and hopefully will save future grid implementors
hours of debugging time.
(cherry picked from commit 2fd14c5f39ad8747a327586ce0839de53b3723f4)

Signed-off-by: Markus Blatt <markus@dr-blatt.de>