Description of Problem:

If you have multiple fonts with the same name but
different variants, Gimp appears unable to choose
between them in the font chooser dialogue box.
Example:
fc-list | grep -i 'antique' | grep -i olive
Antique Olive:style=Bold
Antique Olive:style=Compact
Antique Olive:style=Black
Antique Olive:style=Nord
Antique Olive:style=Nord Italic
Antique Olive:style=Roman
Antique Olive:style=Light
Antique Olive:style=Italic
Antique Olive:style=Bold Condensed


Steps to reproduce the problem:
1. make new image
2. choose Text tool ("T")
3. double click text tool to get tool options
4. resize tool options pallete if necessary so
   that the Font: [Aa] label and button are
   visible
5. click the Aa button
6. after a few seconds a popup appears with a
   list of fonts; click the button in the bottom
   right hand corner, "Open the font selection
   dialog"
7. scroll down until you see the same font name
   repeated on multiple lines.

I'll attach a screen-shot to this bug too.

Suggested fix is to include the variant or style
information after the font name, in the list, and
of course to make sure that the corresponding font
is in fact used.