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.


gtk2hs/gstreamer,gtk2hs/gtksourceview,gtk2hs/webkit,gtk2hs/vte,gtk2hs/vte,gtk2hs/gtksourceview,gtk2hs/webkit,gtk2hs/webkit