CMakeProjectManager: Export CMake*Aspect and CMakeConfigItem

Allow other plugins to set CMake specific Kit options.

Change-Id: I038e9fabc3d2cb8cc463adafebecd51b21ef3d05
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/cmakeprojectmanager/cmakekitinformation.cpp

@@ -58,7 +58,6 @@
 using namespace ProjectExplorer;
 
 namespace CMakeProjectManager {
-namespace Internal {
 // --------------------------------------------------------------------
 // CMakeKitAspect:
 // --------------------------------------------------------------------
@@ -1075,5 +1074,4 @@ KitAspectWidget *CMakeConfigurationKitAspect::createConfigWidget(Kit *k) const
     return new CMakeConfigurationKitAspectWidget(k, this);
 }
 
-} // namespace Internal
 } // namespace CMakeProjectManager