Merge topic 'ctest-build-and-test'

249c679fb4 ctest: Drop --build-and-test test output buffering
cb171bcc12 ctest: Drop --build-and-test build output buffering
41fce4140d ctest: Drop --build-and-test cmake output buffering
1f0994c437 cmGlobalGenerator: Clarify Build method buffering of child process output
14e17a83be cmGlobalGenerator: Clarify Build method output mode argument name
b8f14c6c4d cmGlobalGenerator: Remove default Build method output mode

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Acked-by: alcroito <alexandru.croitor@qt.io>
Merge-request: !9912