Games files have rather generic names and are more like demos
that most people likely won't care to have installed. Patch
this out for now so does not install extra files with tests
(may possibly improve with future FLTK_BUILD_GAMES).
--- a/CMake/install.cmake
+++ b/CMake/install.cmake
@@ -126,3 +126,3 @@
 
-if(FLTK_BUILD_TEST) # "OR FLTK_BUILD_GAMES" (not yet implemented)
+if(0) # "OR FLTK_BUILD_GAMES" (not yet implemented)