Issue reported by ostrosablin (and mentioned previously but I still
I haven't remembered where): loading a roguesymset removes any utf8
data that has been set up for primary symset. The curses interface
explicitly initializes roguesymset to the default set and if config
file has specified OPTIONS=symset:Enhanced1 (or some other uft8 set
if someone adds such), that stays the active set but no longer gets
rendered with the intended symbols.
I have no idea whether having symset and roguesymset both use uft8
with different symbols and/or colors works at all and if so whether
it will still work after this revision, but this prevents loading one
set with non-utf8 while the other still uses utf8 from clearing out
the cached utf8 data.
Closes#1026
9212ae75f8