Source code exports prints lots of stuff with log TRACE but the log4j.properties only states Error

[lausdahl]

There is someting wrong with the log4j configuration in the exporter when used on the command line with option -export source it prints lots of stuff like:

2017-07-10T13:47:39.489 DEBUG [org.overture.codegen.vdm2c.VTableGenerator] - VTable:
 -------------- VTable for BoolPort-------------
       _Z8BoolPortEB: BoolPort -> BoolPort
       _Z8setValueEB: BoolPort -> setValue
       _Z8getValueEV: BoolPort -> getValue
       _Z8BoolPortEV: BoolPort -> BoolPort
	---------- VTable override for Port---------
	       _Z8getValueEV: Port -> getValue overriden by BoolPort -> getValue

but it should not print anything when set to Error