medialib is obsolete; a more thorough patch to completely remove all
references should be provided to upstream.

--- gdk-pixbuf-2.32.1/configure.ac	Thu Oct  1 11:48:24 2015
+++ gdk-pixbuf-2.32.1/configure.ac	Thu Oct  1 11:48:53 2015
@@ -838,25 +838,8 @@
                 AC_DEFINE(HAVE_SYS_SYSINFO_H, 1,
                           [Define to 1 if sys/sysinfo.h is available]))
 
-AC_MSG_CHECKING(for mediaLib 2.3)
+use_mlib=no
 use_mlib25=no
-# Check for a mediaLib 2.3 function since that is what the GTK+ mediaLib
-# patch requires.
-AC_CHECK_LIB(mlib, mlib_ImageSetStruct, use_mlib=yes, use_mlib=no)
-if test $use_mlib = yes; then
-    AC_DEFINE(USE_MEDIALIB, 1,
-              [Define to 1 if medialib is available and should be used])
-    MEDIA_LIB=-lmlib
-
-    AC_MSG_CHECKING(for mediaLib 2.5)
-    # Check for a mediaLib 2.5 function since that is what is needed for
-    # gdk_rgb_convert integration.
-    AC_CHECK_LIB(mlib, mlib_VideoColorRGBint_to_BGRAint, use_mlib25=yes, use_mlib25=no)
-    if test $use_mlib25 = yes; then
-        AC_DEFINE(USE_MEDIALIB25, 1,
-                  [Define to 1 if medialib 2.5 is available])
-    fi
-fi
 AM_CONDITIONAL(USE_MEDIALIB, test $use_mlib = yes)
 AM_CONDITIONAL(USE_MEDIALIB25, test $use_mlib25 = yes)