[Therion] Therion et al on Win 7 or 8.1

[Graham Mullan]

I have been running Notepad++, Therion, Survex, PocketTopo, Topparser and
Adobe pdf readers on W7 for several years.

The only problems I have had are with Aven & that's down to that program not
W7. I have never had a problem with Xtherion not recognising thconfig files
without a name extension. 

I have run all of them under W8 as well, without issues, but haven't done so
since the W8.1 free upgrade happened last week, so I'll not comment on that.

Graham