work around removed imlib2-config

Index: configure
--- configure.orig	2005-11-10 23:31:38 UTC
+++ configure
@@ -7030,13 +7030,8 @@ echo $ECHO_N "checking for imlib2... $ECHO_C" >&6
   echo "$as_me:$LINENO: checking for imlib2" >&5
 echo $ECHO_N "checking for imlib2... $ECHO_C" >&6
   no_imlib2=""
-  if test "$IMLIB2_CONFIG" = "no" ; then
-     no_imlib2=yes
-  else
-     IMLIB2_CFLAGS="`$IMLIB2_CONFIG $imlib2_config_args --cflags`"
-     IMLIB2_LIBS="`$IMLIB2_CONFIG $imlib2_config_args --libs`"
-
-  fi
+     IMLIB2_CFLAGS="`pkg-config --cflags imlib2`"
+     IMLIB2_LIBS="`pkg-config --libs imlib2`"
   if test "x$no_imlib2" = x ; then
      echo "$as_me:$LINENO: result: yes" >&5
 echo "${ECHO_T}yes" >&6
@@ -7067,8 +7062,8 @@ echo "$as_me: error: Cannot find imlib2: Is imlib2-con
 
 
 
-IMLIB_LIBS=`imlib2-config --libs`
-IMLIB_CFLAGS=`imlib2-config --cflags`
+IMLIB_LIBS=`pkg-config --libs imlib2`
+IMLIB_CFLAGS=`pkg-config --cflags imlib2`