#2 Multi formats support - import PCB.

[Mariusz]

Multi formats support - import PCB.

Currently added:
- Eagle (.brd)
- gEDA (.pcb): 100%
- FreePCB (.fpc): 100%
- Razen (.rzp)
- FidoCadJ (.fcd)
- KiCad (.kicad_pcb)
- IDF v2/v3

Tested, accepted (future):
- IDF v4
- TurboPcb (.apcb)

Tested, rejected (currently):
- ZenitPCB
- TARGET 3001!
- SCOOTER

Any suggestions?