Restored code that had been in topo.misc.legacy, to support old data file.
Restored code that had been in topo.misc.legacy, to support old data file.

Tasignotas/topographica_mirror,mjabri/topographica,ioam/topographica,ioam/topographica,Tasignotas/topographica_mirror,ioam/topographica,mjabri/topographica,ioam/topographica,mjabri/topographica,mjabri/topographica,Tasignotas/topographica_mirror,Tasignotas/topographica_mirror,mjabri/topographica,Tasignotas/topographica_mirror,ioam/topographica