Make msvc and cmake play together.

Note: This requires a cvs cmake and is not fully tested yet. This adds a
few missing pieces, so now opening new never built projects without a
.user file on systems with just one VS installation should work.

src/plugins/cmakeprojectmanager/cmakeproject.h

@@ -106,6 +106,7 @@ public:
 
     QString sourceDirectory() const;
     ProjectExplorer::ToolChain::ToolChainType toolChainType() const;
+    ProjectExplorer::ToolChain *toolChain(const QString &buildConfiguration) const;
 
 protected:
     virtual void saveSettingsImpl(ProjectExplorer::PersistentSettingsWriter &writer);