Rewrote PrettyPrinter to output the document exactly as it was before

This means at the moment the PrettyPrinter isn't doing anything useful,
but the idea is that from here we can improve it to adapt the code to
a certain style.

Reviewed-by: Roberto Raggi

src/shared/cplusplus/ASTVisitor.cpp

@@ -69,6 +69,9 @@ Control *ASTVisitor::control() const
 TranslationUnit *ASTVisitor::translationUnit() const
 { return _control->translationUnit(); }
 
+unsigned ASTVisitor::tokenCount() const
+{ return translationUnit()->tokenCount(); }
+
 const Token &ASTVisitor::tokenAt(unsigned index) const
 { return translationUnit()->tokenAt(index); }