cmake: set CMP0072 policy to NEW (libOpenGL/libGLX preference over legacy libGL)

Author: dos1

CMakeLists.txt

@@ -22,6 +22,9 @@ if(COMMAND cmake_policy)
     if(POLICY CMP0026)
         cmake_policy(SET CMP0026 NEW)
     endif()
+    if(POLICY CMP0072)
+        cmake_policy(SET CMP0072 NEW)
+    endif()
 endif(COMMAND cmake_policy)
 
 if(NOT CMAKE_BUILD_TYPE)