Doc improvement: grid capability summary.
Doc improvement: use namespace for proper class ref.
Doc improvement: fix wrong class name.
Merge branch 'master' into doc-improvements
Exclude embedded TinyXML library from doc generation.
Added some top-level docs: wells and pressure solvers.
Remove info about low-level assembler routines.
Changed OpenRS->OPM in copyright notices and #include guards.
Changed OpenRS->OPM in copyright notices and #include guards.
Changed OpenRS->OPM in copyright notices and #include guards.
Minor fixes to top-level docs.
Use portable method of zeroing vector of ints.

The memset() technique is only applicable to platforms for which
numerical zero is represented by all bits zero.
Eliminate release-mode build warning.

The 'cbottom' variable is only used within an assert().  Don't define
the variable in release (i.e., "NDEBUG") mode.
Eliminate redundant explicit type conversion.

The pointers in question are already type 'int *'.  There is no need to
explicitly convert them to that type too.
Replace an assignment with intended equality test

This corrects a latent error that has been present since the inception
of this module.
Update import of ERT-Eclipse headers to new location
Catch up to changing location of ERT headers
Catch up to ERT library reorganisation

Specifically, changing locations of headers and library renaming

    libgeometry.a -> libert_geometry.a
Catch up to changing location of ERT headers.
Merge pull request #138 from bska/release-cleanup

Correct a number of latent issues in `tarjan.c`