meson: Move CAIRO_HAS_INTERPRETER to config.h
This is what autoconf does and hopefully that means this is the correct thing to do.
Signed-off-by: Uli Schlachter psychon@znc.in
I tried looking into #455, but, meh, most of that is more complicated than adding one #define
. Instead, I ended up opening #474. Anyway, this PR contains the one good commit that came out of my attempt.