Rename {Core,TextEditor},{Base,}TextDocument classes

First step of some more 'Base' removal in TextEditor.
s/Core::TextDocument/Core::BaseTextDocument/
s/TextEditor::BaseTextDocument/TextEditor::TextDocument/

Change-Id: I71ba325a2f0ad72ec9dae0d96846cbae72d326f7
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/cpptools/cppmodelmanagersupport.h

@@ -34,7 +34,7 @@
 
 #include <QString>
 
-namespace TextEditor { class BaseTextDocument; }
+namespace TextEditor { class TextDocument; }
 
 namespace CppTools {
 
@@ -51,7 +51,7 @@ public:
 
     virtual CppCompletionAssistProvider *completionAssistProvider() = 0;
     virtual BaseEditorDocumentProcessor *editorDocumentProcessor(
-                TextEditor::BaseTextDocument *baseTextDocument) = 0;
+                TextEditor::TextDocument *baseTextDocument) = 0;
 };
 
 } // CppTools namespace