Crossify normalizePathName

Denoise usages

get{Short|Long}PathName are now static. They're not used anywhere except
in normalizePathName.

Change-Id: Ief277b6d828faadd98ec7faa39dd682bfaa8805f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>