[Fontconfig] Changing behavior of evaluating multiple values in FcFontList()

[Akira TAGOH]

Hi,

FcFontList() (as konwn as API which fc-list uses) evalues and returns
a result only when all of conditions are matched. for example, doing
:foo=a,b would means 'the value of 'foo' matches 'a' AND 'b' so far.
but one may expects to see OR instead of AND in most cases.

Does anyone have any situations where you want to keep AND?
Otherwise I'll change this.

-- 
Akira TAGOH