Change matching behavior in FcFontList()

When specifying properties like :foo=a,b to query from FcFontList(),
fontconfig interprets if 'foo' matches 'a' AND 'b' at this moment though,
This isn't useful behavior. so changing this as matching 'a' OR 'b'.

Fixes fontconfig/fontconfig#5
3 jobs for issue/5 in 5 minutes and 27 seconds
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passed #373863
mingw-build

00:04:31

passed #373861
shared-build

00:05:27

passed #373862
static-build

00:04:18