Merge topic 'remove-old-compatibility'

785523a136 Remove compatibility with CMake versions older than 2.8.0
35282387ea CMP0014: Remove support for OLD behavior
fad9c55b8b CMP0013: Remove support for OLD behavior
98a59ba8ad CMP0012: Remove support for OLD behavior
3c0dbb66f5 CMP0011: Remove support for OLD behavior
cf832e75bc CMP0010: Remove support for OLD behavior
77f8c374f3 CMP0009: Remove support for OLD behavior
43ef139567 CMP0008: Remove support for OLD behavior
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !10188