[packagekit] Implementing what-provides

[Fabio Erculiani]

I'm currently trying to implement what-provides for PROVIDES_FONT,
PROVIDES_CODEC and perhaps PROVIDES_HARDWARE_DRIVER.
I'm not fully understanding what input values I should expect, maybe
this is documented somewhere, but otoh I'm seeing not all the backends
have this implemented.
Maybe it's because there is no clear standard that defines expected
input values?

Simple example, PROVIDES_FONT: what I should expect between
"something.ttf", "Something Bold/Italic/Whatever", "Something", etc.
Same thing for PROVIDES_CODEC and PROVIDES_HARDWARE_DRIVER.

help :-)

-- 
Fabio Erculiani