Squashed 'cmake/' changes from 3ea43dc..b0d0a58

b0d0a58 Fix/improve use of luac
0469be6 Minor lua/filecopy tweak fixing source files outside of tree

git-subtree-dir: cmake
git-subtree-split: b0d0a584df1d408c83381652359c40d1c47765c8

FileCopyTargets.cmake

@@ -67,7 +67,7 @@ function(add_file_copy_target _target _dest)
 			COMMAND
 			${CMAKE_COMMAND}
 			ARGS -E copy "${fullpath}" "${_dest}"
-			MAIN_DEPENDENCY "${fn}"
+			MAIN_DEPENDENCY "${fullpath}"
 			VERBATIM
 			COMMENT "Copying ${fn} to ${absout}")
 		list(APPEND SOURCES "${fullpath}")