Merge topic 'try_compile-linker-language'

0f37000304 try_{compile,run}: add LINKER_LANGUAGE option
dc0dbffb0f Tests: Remove redundant policy setting from RunCMake.try_{compile,run} cases

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !8871