Fixed inconsistency of tests.
'IGES.OCC.write.unit no more' used.
provider.IGES.OCC.read.layer : 1
provider.IGES.OCC.write.brep.mode : 0
provider.IGES.OCC.write.convertsurface.mode : 0
-provider.IGES.OCC.write.unit : 2
provider.IGES.OCC.write.header.author :
provider.IGES.OCC.write.header.company :
provider.IGES.OCC.write.header.product :
provider.IGES.OCC.read.layer : 1
provider.IGES.OCC.write.brep.mode : 0
provider.IGES.OCC.write.convertsurface.mode : 0
-provider.IGES.OCC.write.unit : 2
provider.IGES.OCC.write.header.author :
provider.IGES.OCC.write.header.company :
provider.IGES.OCC.write.header.product :