Code model: Update on changes from the versioning system.

Add changed signals to IVersionControl and
VCSManager and wire them to the update methods. Add a menu action for
manually updating. Improved version of reverted
7aa2411693.

Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

src/plugins/cvs/cvsplugin.h

@@ -59,6 +59,7 @@ namespace CVS {
 namespace Internal {
 
 class CVSSubmitEditor;
+class CVSControl;
 
 struct CVSResponse
 {
@@ -153,7 +154,7 @@ private:
     void cleanCommitMessageFile();
 
     CVSSettings m_settings;
-    Core::IVersionControl *m_versionControl;
+    CVSControl *m_versionControl;
     QString m_commitMessageFileName;
 
     ProjectExplorer::ProjectExplorerPlugin *m_projectExplorer;