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, 1 insertions, 1 deletions

diff --git a/Source/CPack/cmCPackCygwinBinaryGenerator.h b/Source/CPack/cmCPackCygwinBinaryGenerator.h
index b5a0531bbe..f87a1343be 100644
--- a/Source/CPack/cmCPackCygwinBinaryGenerator.h
+++ b/Source/CPack/cmCPackCygwinBinaryGenerator.h
@@ -17,7 +17,7 @@ public:
    * Construct generator
    */
   cmCPackCygwinBinaryGenerator();
-  ~cmCPackCygwinBinaryGenerator() CM_OVERRIDE;
+  ~cmCPackCygwinBinaryGenerator() override;
 
 protected:
   virtual int InitializeInternal();