Fix macro in a better way. Cairo SVG support wouldn't build because /.../include was removed from CAIROSVG_CFLAGS because it was a prefix of /.../include/cairo which was in CAIRO_CFLAGS on which the SVG library depends.
Fix macro in a better way.
Cairo SVG support wouldn't build because /.../include was removed from
CAIROSVG_CFLAGS because it was a prefix of /.../include/cairo which
was in CAIRO_CFLAGS on which the SVG library depends.

vincenthz/webkit