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]]

[[Imported from SVN: r7124]]

[[Imported from SVN: r7122]]

[[Imported from SVN: r7116]]

The index sets themselves are already there.

Step 1: copying files from dune-istl to dune-common

[[Imported from SVN: r7110]]