Use document instead of widget in TextEditor::RefactoringChangesData

Change-Id: I938041c9774fbebd1edc6dc29ccfa569bae94f70
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
TextEditors: Remove tabSettings() from widget

It's part of the document.

Change-Id: I7288b09a0792fdae9c741016594e129f6b21f8e7
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
C++: Support multiline strings and comments

Task-number: QTCREATORBUG-662
Change-Id: I0997fe2afaba71998d5da549b7141df0c023ff12
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>