New log viewer tool

[David Edmundson]

I'm afraid I've only just got round to trying this out.

It works really well. It doesn't need to look fantastic, as it is
purely a debug thing. The only addition I'd add is a button/menu entry
to save to a text file.

If we could ship this (not with a menu entry, just hidden somewhere)
this could really make life giving tech-support/bug reporting a lot
easier.

Did you chase upstream with regards to getting this merged into TpQt?
Any feedback?

Dave