Use C++11 override instead of CM_OVERRIDE

We now require C++11 support including `override`.  Drop use of
the old compatibility macro.  Convert references as follows:

    git grep -l CM_OVERRIDE -- '*.h' '*.hxx' '*.cxx' |
      xargs sed -i 's/CM_OVERRIDE/override/g'

1 files changed, 2 insertions, 2 deletions

diff --git a/Source/cmUnexpectedCommand.h b/Source/cmUnexpectedCommand.h
index 5e3ac74..7154881 100644
--- a/Source/cmUnexpectedCommand.h
+++ b/Source/cmUnexpectedCommand.h
@@ -21,13 +21,13 @@ public:
   {
   }
 
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     return new cmUnexpectedCommand(this->Name, this->Error);
   }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::string Name;