pcb-rnd-io-standard	modular PCB editor- gEDA-gaf and tEDAx format support

Plugins for tEDAx footprint format and the gEDA/PCB file formats (footprint
and board).

 the original gEDA pcb format    yes, PLUGIN     [io_pcb]
 tEDAx (Trivial EDA eXchange)    yes, PLUGIN     [io_tedax]
