Vcs: Drop VcsBaseOptionsPage hierarchy level

Adapt the remaining users: Cvs,Git,Svn.

Change-Id: Idd730a33e5c64d18002b1a21b5f5c715b7fa5ffb
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/bazaar/optionspage.h

@@ -25,7 +25,9 @@
 
 #pragma once
 
-#include <vcsbase/vcsbaseoptionspage.h>
+#include <coreplugin/dialogs/ioptionspage.h>
+
+namespace Core { class IVersionControl; }
 
 namespace Bazaar {
 namespace Internal {