Merge topic 'GNUInstallDirs-typo'

33f03129 Fix typo in Modules/GNUInstallDirs.cmake (#15176)
Merge topic 'build_cmake_dmg_non_universal'

3da328d3 Make the OSX 10.6+ release x86_64 only.
Merge topic 'cleanup-CMP0054'

69fe5920 GenerateExportHeader: Avoid if() quoted auto-dereference
Merge branch 'master' into next