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, 3 insertions, 3 deletions

diff --git a/Source/cmGlobalVisualStudio15Generator.h b/Source/cmGlobalVisualStudio15Generator.h
index 730784b..e934882 100644
--- a/Source/cmGlobalVisualStudio15Generator.h
+++ b/Source/cmGlobalVisualStudio15Generator.h
@@ -28,7 +28,7 @@ public:
 
   virtual const char* GetToolsVersion() { return "15.0"; }
 protected:
-  bool InitializeWindows(cmMakefile* mf) CM_OVERRIDE;
+  bool InitializeWindows(cmMakefile* mf) override;
   virtual bool SelectWindowsStoreToolset(std::string& toolset) const;
 
   virtual const char* GetIDEVersion() { return "15.0"; }
@@ -44,8 +44,8 @@ protected:
   // Check for a Win 8 SDK known to the registry or VS installer tool.
   bool IsWin81SDKInstalled() const;
 
-  std::string FindMSBuildCommand() CM_OVERRIDE;
-  std::string FindDevEnvCommand() CM_OVERRIDE;
+  std::string FindMSBuildCommand() override;
+  std::string FindDevEnvCommand() override;
 
 private:
   class Factory;