Enabling more than one output from the FieldConvert
Currently FieldConvert allows only for a single output module. The output module is selected based on the order the files are provided. This change allows for the following:
FieldConvert -m mymultioutputmodule geom.xml geom.fld geom_out.xml:xml:out geom_out.fld
With the output to geom_out.xml and geom_out.fld