Log Message:
Update to 20060123.  Changes since the last version include

- added autobackup (saves to backup files every <n> seconds)
- added "L" drawing support
- added embedded picture support
- added a few new symbols
- added support for spice netlisting of Josephson junction devices
- added pcbpins netlist backend for forward annotating schematic pin
  names to PCB layouts.
- several odd bug fixes