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/cmUseMangledMesaCommand.h b/Source/cmUseMangledMesaCommand.h
index 86ebbf1c83..78f86167bd 100644
--- a/Source/cmUseMangledMesaCommand.h
+++ b/Source/cmUseMangledMesaCommand.h
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmUseMangledMesaCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmUseMangledMesaCommand; }
+  cmCommand* Clone() override { return new cmUseMangledMesaCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   void CopyAndFullPathMesaHeader(const char* source, const char* outdir);