address and interface labels cluttered or difficult to read

```
It is easy to draw a topology where the IPv4/IPv6 addresses and/or interface
names clutter up the display. Sometimes it is hard to read addressing info from
nodes.

This enhancement would be to more intelligently arrange address/interface
labels, and/or allow them to be re-positioned in relation to the node or their
font/size adjusted. The node name labels do allow re-positioning, with the
labelcoords X,Y coordinates stored within the imn file.
```

Original issue reported on code.google.com by `ahrenh...@gmail.com` on 21 Mar 2012 at 3:01