[Fontconfig] changing API's of existing funcs

[Behdad Esfahbod]

Basically, no ABI breakage allowed.  We can add new API though.

behdad

On 11/07/2011 02:06 PM, Mike Frysinger wrote:
> is there a document that covers the expected level of ABI compat that 
> fontconfig is aiming for ?  there are some things i'd like to fix (like changing 
> "int" to "size_t", changing a func to be a vararg, etc...).
> -mike