rdoc: improve constructor detection
rdoc: improve constructor detection

vcrhonek/openwsman,kkaempf/openwsman,kkaempf/openwsman,kkaempf/openwsman,Openwsman/openwsman,kkaempf/openwsman,Openwsman/openwsman,vcrhonek/openwsman,kolbma/openwsman,Openwsman/openwsman,vcrhonek/openwsman,kkaempf/openwsman,vcrhonek/openwsman,kkaempf/openwsman,Openwsman/openwsman,Openwsman/openwsman,vcrhonek/openwsman,kolbma/openwsman,Openwsman/openwsman,kkaempf/openwsman,Openwsman/openwsman,kolbma/openwsman,kolbma/openwsman,kolbma/openwsman,kolbma/openwsman,vcrhonek/openwsman,vcrhonek/openwsman,kolbma/openwsman