From Bertrand (slight mods by me): fix CMake for Windows.
From Bertrand (slight mods by me): fix CMake for Windows.

karies/cling,root-mirror/cling,karies/cling,root-mirror/cling,root-mirror/cling,karies/cling,karies/cling,marsupial/cling,karies/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,marsupial/cling,marsupial/cling,root-mirror/cling,root-mirror/cling,marsupial/cling