Rename namespace Qt4ProjectManager to QmakeProjectManager

First step towards plugin renaming.

Change-Id: I8ac017660a7aa2bda0d7bb7d72ab0cfceaf6cfd2
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/cmakeprojectmanager/cmakeeditor.h

@@ -104,6 +104,6 @@ public:
 };
 
 } // namespace Internal
-} // namespace Qt4ProjectManager
+} // namespace CMakeProjectManager
 
 #endif // CMAKEEDITOR_H