* use imported targets where possible

also for the export

* cmake: remove explicit definitions for downstream projects

* increase minor version

will be done for all projects using cmake-exports

* remove --export-dynamic linker flag

because it makes no sense for libs

* Use correct of version pthread_setname_np depending on platform.

On Linux, this function takes two parameters. On most other platforms
(including all BSD-based platforms) it only takes a single parameter.

* Omit -Wl,--export-dynamic flag on macOS.

This flag is not supported on Clang / LLVM and on macOS it is not needed
anway because exporting all symbols is the default behavior.

When using Clang on other platforms (e.g. Linux) --export_dynamic or
-rdynamic might have to be specified instead.

* clang compiler compatibility

Co-authored-by: Sebastian Marsching <sebastian.marsching-git-2016@aquenos.com>

* fix code formatting

* enable coding style test

This will make QtCreator group all test executables, which offers a much
better overview.

ApplicationCore 02.07 is the planned feature upgrade (PreriodicTrigger) for DeviceAccess 02.08, while the master already is on DeviceAccess 03.00

Did not increase the patch because of binary incompatibilities.

* spec tests: Data validity propagation
* update documentation links spec <-> tests

Co-authored-by: Dietrich Rothe <dietrich.rothe@desy.de>

so dependencies can already ask for the new features

Test application structure:

CS +---> threaded fanout +------------------+
             +                              v
             +--------+                   +Device1+
                      |                   |       |
                      v                +--+       |
  CS   <---------+ Module1 <-------+   v          |
              |       ^            +Consuming     |
              |       +---------+    fanout       |
              +----+            +      +          |
                   v         Device2   |          |
  CS   <---------+ Module2             |          |
                                       |          |
  CS   <-------------------------------+          |
                                                  |
                                                  |
  CS   <---------+ Trigger <----------------------+
                      ^
                      |
                      +
                      CS