Merge topic 'EXCLUDE_FROM_ALL-genex'

22bd267388 Help: Add release note for EXCLUDE_FROM_ALL genex support
807c8aa9f0 Tests: Simplify RunCMake.ExcludeFromAll single-config case
36743436cf Tests: Fix RunCMake.ExcludeFromAll test program warning
99c131c5a3 cmGlobalGenerator: Fix spelling of EXCLUDE_FROM_ALL in error message

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5049