Respect also whitespace within the operator names (e.g. "operator=" vs
"operator =").

Change-Id: Ibdfc77e9eebf7e3db31ccce7d8959b226dcda765
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>