we know these currently won't work correctly, so building them is
currently discouraged and disabled. If anyone needs this, she can
easily patch the CMakeLists.txt to remove the error.

these tests tend to fail randomly on busy systems. Increasing the
timeout should help to make the test more reliable.

Add a helper function for the tedious "if windows, configure file and
add to the target's sources".

as we always build with OpenSSL and have TLS enabled, the settings and
code to build with these disabled can be safely removed.

as we require ZLIB for building, we don't need these conditionals
anywhere in the build.

Remove HAVE_PQISTHREADSAFE which was always set to 1.
Also remove POSTGRESQL_BATCH_FILE_INSERT that is now unused.

as this cannot be determined ahead-of-time for every build/platform it
is probably better to rely on CTEST_PARALLEL_LEVEL being set in the
environment.
Thus, instead of statically setting this to 10, we force 5 for
sanitizer builds and otherwise set it to 10 unless the user has set
CTEST_PARALLEL_LEVEL in the environment.

this is required as setting test properties on gtests is now not
possible anymore.

this seems to be unused and the directories we're pointing at do not
exist anymore.
Also, the old specfiles for OBS are not needed anymore.

this removes most of the OPENSSL_VERSION_NUMBER checks.

so we can nicely hide the detail of requiring `-lcam` on FreeBSD.

while this is not truly required nowadays, we should have it on
everything that handles dynamic loading.

* remove BACKEND_OBJECTS
* remove unneeded link_libraries that will be added transitively anyway
* put re-used sources into STATIC libraries

by returning the created files from bareos_configure_file() this
function could be simplified a lot.

this regularly hits OOM when built with ASAN as it runs a lot of jobs.