[cairo] Finding libXrender

[Carl Worth]

On Dec 15, Bill Spitzak wrote:
 > (I would prefer the other way around but I was unable to figure out how to 
 > tell autoconf to do that).

I would prefer that too.

The PKG_CHECK_MODULES does accept action-if-found and
action-if-not-found arguments just like AC_CHECK_HEADER. Would your
patch work if it the nesting of these two macros were just turned
inside-out?

-Carl