[cmake][cleanup] Remove search status message erroneously printed for all dependencies (also those not found)

[Python] avoid logging both 'generating' and 'compiling' module in two lines

See merge request !1057

Move dunecommon target to the root CMakeLists file

See merge request !1048

[python] Add preprocessor option to disable Python deprecation warning

See merge request !1043

Feature/python reduce printing compiling

See merge request !1052

[python] Add mechanism to register external Pyhton modules to dune-py

Closes #274

See merge request !1049

The function dune.common.registerExternalModule(module) has
to be actively called in the downstream module to register
an external package. This triggers the reconfiguration of dune-py
in case dune-py has already been created.

Add missing includes CMakePushCheckState and FeatureSummary

See merge request !1047

Redesign the cmake dune_add_library function

See merge request core/dune-common!1037

Use keyword extends in gitlab-ci

See merge request !1046

Deprecate cmake function remove_processed_modules

See merge request !1039

[math] Use integer type in Factorial

See merge request !1045

[test][math] Improve factorial/binomial test and use function factorial instead of deprecated struct

Using an enum has the side effect that you can't do arithmetic without explicitly casting to an integer type.
This also produced a compiler warning with clang 10 "arithmetic between different enumeration types is deprecated"
-Wdeprecated-anon-enum-enum-conversion

Install the export-set in finalize_dune_project

Register an EXPORT_SET variable

Replace DUNE_MODULE_LIBRARIES with <module>_LIBRARIES

This option is currently needed to make pylint happy which chokes on these deprecation warnings during AST generation even if the deprecated field is not used in the user code.

Remove deprecated cmake function overload target_link_libraries

See merge request !1036

[bugfix][NumPyVector] capture raw pointer to avoid performance penalty.

See merge request !1041

something that is used and modified on the C++ side.

bottleneck.

Introduce conditional pragma omp simd only if available

Closes #267

See merge request !1035

add a changelog entry for the overhauled python bindings referencing the MR

See merge request !1033

don't fail build on missing python requirements

See merge request !1034

make python requirements available upstreams

[fix]

don't add any install rules if initial installation of requirement file failed

don't execute tests if python setup was not successfull

return 77 in python test in case the venv isn't set up so ctest flags the test as 'skipped'

Extract cmake functions dune_project into separate file

See merge request !1029

Extract cmake functions to create the dependency tree into separate files

See merge request !1028