* Keep BUILD_TESTING, but only run tests compatible with API (for
packaging)
* Add BUILD_TESTING_INTERNAL for all tests including internal function
tests that modify API to be run on our CI
* Disable clang-tidy in test build directories
* Disable compiler warnings for test binary directories.
These contain generated code we can not change, so the warnings are just noise
If a target is linked against libraries with cmake
(target_link_libraries) and the libraries are not marked as PRIVATE
they are "exported" and in case a other target is linked against this
target it is also linked against *all* (not private) libraries.
Without declaring private libraries PRIVATE a lot of over linking
(linking against unneeded libraries) was done.
winpr is now always build as single library.
The build option MONOLITHIC_BUILD doesn't influence this behavior anymore.
The only exception is winpr-makecert-tool which is still build as extra
library.
This obsoletes complex_libraries for winpr.
