Vcs: rename overload SubmitEditor::diffSelectedFiles() for rows

-> Renamed to diffSelectedRows()

This allows to use easily Qt5 connects, without ugly casting to
pick the right overload

Change-Id: Ifaa0242febccb4e1aadd53470cc4b3be79b07c18
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
(cherry picked from commit 12fac12e8f)

src/plugins/bazaar/bazaarplugin.cpp

@@ -596,8 +596,8 @@ void BazaarPlugin::showCommitWidget(const QList<VcsBaseClient::StatusItem> &stat
     setSubmitEditor(commitEditor);
 
     commitEditor->registerActions(m_editorUndo, m_editorRedo, m_editorCommit, m_editorDiff);
-    connect(commitEditor, SIGNAL(diffSelectedFiles(QStringList)),
-            this, SLOT(diffFromEditorSelected(QStringList)));
+    connect(commitEditor, &VcsBaseSubmitEditor::diffSelectedFiles,
+            this, &BazaarPlugin::diffFromEditorSelected);
     commitEditor->setCheckScriptWorkingDirectory(m_submitRepository);
 
     const QString msg = tr("Commit changes for \"%1\".").