Merge topic 'imported-framework-soname-file'

820d3afb28 Framework: Fix $<TARGET_SONAME_FILE:...> for imported frameworks

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Merge-request: !6147