Collision detection for iface method -> prop.
Collision detection for iface method -> prop.

* generator/ObjectGen.cs: detect method collisions on interfaces
against the object properties to avoid duplicate property generation.

akrisiun/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,akrisiun/gtk-sharp,akrisiun/gtk-sharp,antoniusriha/gtk-sharp,Gankov/gtk-sharp,orion75/gtk-sharp,Gankov/gtk-sharp,sillsdev/gtk-sharp,antoniusriha/gtk-sharp,Gankov/gtk-sharp,antoniusriha/gtk-sharp,openmedicus/gtk-sharp,Gankov/gtk-sharp,openmedicus/gtk-sharp,orion75/gtk-sharp,sillsdev/gtk-sharp,sillsdev/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,openmedicus/gtk-sharp,akrisiun/gtk-sharp,sillsdev/gtk-sharp,akrisiun/gtk-sharp,orion75/gtk-sharp,openmedicus/gtk-sharp,antoniusriha/gtk-sharp,Gankov/gtk-sharp,sillsdev/gtk-sharp,Gankov/gtk-sharp,orion75/gtk-sharp,antoniusriha/gtk-sharp