[Fontconfig] changing API's of existing funcs

[Mike Frysinger]

On Monday 07 November 2011 13:34:09 Behdad Esfahbod wrote:
> Basically, no ABI breakage allowed.  We can add new API though.

the question is, how do we preserve ABI compatibility.  is symbol versioning 
allowed ?  or must we always add new symbol names ?
-mike
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