[Fontconfig] Exposing match level

[Behdad Esfahbod]

Hi all,

I'm sure most of you who have been around know that it's been a very common
request to want to know whether fontconfig found a match for a request or just
fallbacks.  I've been thinking about this a lot recently, and like to make
sure we fix it this time.

Please see my initial attempt and discussion here:

  https://bugs.freedesktop.org/show_bug.cgi?id=90330

Feedback welcome, otherwise I'll go ahead and try to get this done in the next
couple of weeks.

Cheers,
-- 
behdad
http://behdad.org/