pcb-rnd-export-extra	modular PCB editor- extra export formats, printing

Less commonly-used export formats:

 FidoCadJ .fcd pcb_exporter      yes, PLUGIN     [export_fidocadj]
 IPC-D-356 Netlist pcb_exporter  yes, PLUGIN     [export_ipcd356
 3d export: STL/amf/pro          yes, PLUGIN     [export_stl]
 gEDA old connection data format yes, PLUGIN     [export_oldconn]

 lpr pcb_exporter (printer)      yes, PLUGIN     [export_lpr]
