Merge topic 'target-prop-backtraces'

52c95540b7 target_*: Fix cross-directory call backtraces
0d64c3abd1 Tests: Add FileAPI case for cross-directory target_* commands
ef6a4240ba cmQtAutoGenInitializer: Drop unnecessary argument in AppendProperty call

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !7602