Mostly automated:

 values=( "EXECUTABLE" "STATIC_LIBRARY" "SHARED_LIBRARY" "MODULE_LIBRARY" "OBJECT_LIBRARY" "UTILITY" "GLOBAL_TARGET" "INTERFACE_LIBRARY" "UNKNOWN_LIBRARY" "TargetType")
 for i in "${values[@]}"; do     git grep -l cmTarget::$i | xargs sed -i "s|cmTarget::$i|cmState::$i|g"; done