Merge topic 'aix-no-toolchain-rpath'

fa1218290d AIX: Fix INSTALL_REMOVE_ENVIRONMENT_RPATH with GNU compiler
6e4c378b3e cmComputeLinkInformation: Clarify platform/toolchain RPATH handling comments

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !11933