Commit 4878943f actuall did change
the default behavior, it effectifly disabled LaTex for some users.
To disable LaTeX pass -DCMAKE_DISABLE_FIND_PACKAGE_LATEX=TRUE

(cherry picked from commit 88bbf966)
Signed-off-by: Carsten Gräser <graeser@dune-project.org>

Needed to build the documentation only for make doc.
Avoid name clashes by adding MANGLE_TARGET_NAMES.
With CMake 3.0.0 no more warnings are emitted by
building the documentation.

[[Imported from SVN: r7403]]

[Merge][CMake] -r7398 from branches/cmake: [BugFix] Fix endless recursion in dune_add_latex_document.

We now check whether the tex source exists. If not we check whether
the pdf is already in the source tree, otherwise we send an error.


[[Imported from SVN: r7401]]

We now check whether the tex source exists. If not we check whether
the pdf is already in the source tree, otherwise we send an error.

[[Imported from SVN: r7398]]

Previously there still was a dependency to build the pdf which miserably failed as we don not distribute tex files.

[[Imported from SVN: r7382]]

The tarballs already contain the generated pdf files. No CMake 
will detect whether the pdf are contained in the source tree.
If that is the case they will not be generated and installed directly.

[[Imported from SVN: r7380]]

- Removed dependency on cmake version 2.8.9
  Object libraries can now be created with dune_add_library(<target>
  OBJECT <sources>). It will create a GLOBAL property
  _DUNE_TARGET_OBJECTS:<target>_ that records the full path to the
  source files. Theses can later be referenced by providing
  _DUNE_TARGET_OBJECTS:<target>_ as one of the sources to dune_add_library

[[Imported from SVN: r6987]]

reasonable help.

Renamed add_parmetis_flags to add_dune_parmetis_flags for consistency.

[[Imported from SVN: r6764]]

[[Imported from SVN: r6703]]

  call). Mimic this in the variable names used in the package
  configuration files.
- CMake practices for variable name in package configuration
- added an optional argument for specifying a dependency to
  create_doc_install. This is needed as add_latex_document with the
  safepdf option creates a target <basename>_safepdf for building 
  <basename>.pdf. Without specifying <basename>_safepdf as the
  dependency,  <basename>.pdf would be build in non-safe mode before
  install leading to errors with eps figures.

[[Imported from SVN: r6699]]

[[Imported from SVN: r6689]]

[[Imported from SVN: r6688]]

[[Imported from SVN: r6687]]

[[Imported from SVN: r6686]]

[[Imported from SVN: r6672]]

[[Imported from SVN: r6662]]

other DUNE modules.

Check the dune.module file more rigorously! (Previously errors were
not apparent)

[[Imported from SVN: r6655]]

subprocess cmak call.

[[Imported from SVN: r6650]]

 documentation besides doxygen can be installed.
- Make sure we install under ${CMAKE_INSTALL_PREFIX}. Therefore
  we must provide the absolute path to our custom install script.
- Include DuneDoc at toplevel and let create the doc target. Thus
  we can use its macros all over the place.

[[Imported from SVN: r6626]]