Set some cmake policies to mute cmake warnings

CMakeLists.txt

@@ -7,6 +7,14 @@
 
 cmake_minimum_required(VERSION 2.6)
 
+if(POLICY CMP0043)
+    cmake_policy(SET CMP0043 OLD)
+endif()
+
+if(POLICY CMP0048)
+    cmake_policy(SET CMP0048 OLD)
+endif()
+
 set(PROJECT_NAME "Cockatrice")
 set(PROJECT_VERSION_MAJOR 0)
 set(PROJECT_VERSION_MINOR 0)