C++: Rename semanticRehighlight to recalculateSemanticInfoDetached

semanticRehighlight() does a bit more than only rehighlighting and we
want to trigger (only) rehighlighting in a follow-up change.

Change-Id: Ic8da9ec8643f0f82f7c99ef9a8180b2868194254
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/cppeditor/cppeditor.cpp

@@ -182,7 +182,7 @@ void CppEditorWidget::finalizeInitialization()
     connect(document(), SIGNAL(contentsChange(int,int,int)),
             &d->m_localRenaming, SLOT(onContentsChangeOfEditorWidgetDocument(int,int,int)));
     connect(&d->m_localRenaming, &CppLocalRenaming::finished, [this] {
-        cppEditorDocument()->semanticRehighlight();
+        cppEditorDocument()->recalculateSemanticInfoDetached();
     });
     connect(&d->m_localRenaming, &CppLocalRenaming::processKeyPressNormally,
             this, &CppEditorWidget::processKeyNormally);