[glabels] Better test for libzint.

[Jim Evins <jimevins src gnome org>]

commit 2cc9977dd9fb2e069b9dac4439af952c2f2c15ee
Author: Jim Evins <evins snaught com>
Date:   Mon Sep 27 17:20:33 2010 -0400

    Better test for libzint.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1e06468..836e342 100644
--- a/configure.ac
+++ b/configure.ac
@@ -81,7 +81,7 @@ LIBEBOOK_REQUIRED=2.28.0
 LIBBARCODE_REQUIRED=0.98
 LIBQRENCODE_REQUIRED=3.1.0
 LIBIEC16022_REQUIRED=0.2.4
-LIBZINT_REQUIRED=2.3.1
+LIBZINT_REQUIRED=2.4.0
 
 dnl Make above strings available for packaging files (e.g. rpm spec files)
 AC_SUBST(GLIB_REQUIRED)
@@ -169,7 +169,7 @@ AC_ARG_WITH(libzint,
 	    [AS_HELP_STRING([--without-libzint],[build without Zint Barcode support])])
 have_libzint=no
 if test "x$with_libzint" != xno; then
-   AC_CHECK_LIB(zint, ZBarcode_Create,
+   AC_CHECK_LIB(zint, ZBarcode_Render,
 		[have_libzint=yes], [have_libzint=no])
 fi