[CMake] Update two CMake policies to NEW.

The two policies in question should not affect ROOT:
- ROOT does not use <PACKAGENAME>_ROOT for purposes other than finding a
  package, so the NEW version of the policy is fine.
- And it is preferable to update the timestamps of files extracted from
  an archive if the URL changes (NEW) as opposed to keeping the
  timestamps found in the archive (OLD).

Author: hageboeck

CMakeLists.txt

@@ -32,6 +32,8 @@ foreach(directoryName IN ITEMS ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${CMAKE_I
 endforeach()
 
 set(policy_new CMP0072 CMP0076 CMP0077 CMP0079
+    CMP0135 # Timestamps of downloaded archives are set to time of extraction
+    CMP0144 # <PACKAGENAME>_ROOT (converted to upper case) can be used to search for dependencies
     CMP0156 CMP0179 #deduplicate static libraries when linker supports it
 )
 foreach(policy ${policy_new})
@@ -40,7 +42,7 @@ foreach(policy ${policy_new})
   endif()
 endforeach()
 
-set(policy_old CMP0116 CMP0135 CMP0144)
+set(policy_old CMP0116)
 foreach(policy ${policy_old})
   if(POLICY ${policy})
     cmake_policy(SET ${policy} OLD)