[gtk+] configure.ac: Use AC_PREPROC_IFELSE instead deprecated AC_TRY_CPP

[Javier Jardón <jjardon src gnome org>]

commit dffc96a2416f766b02dc5257cb7c8e2c216ef937
Author: Javier Jardón <jjardon gnome org>
Date:   Sun Feb 6 22:26:02 2011 +0000

    configure.ac: Use AC_PREPROC_IFELSE instead deprecated AC_TRY_CPP

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c29d973..dd99c9b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -727,7 +727,8 @@ fi
 
 # Check for uxtheme.h (for MS-Windows Engine)
 AC_MSG_CHECKING(for uxtheme.h)
-AC_TRY_CPP([#include <uxtheme.h>], gtk_uxtheme_h=yes, gtk_uxtheme_h=no)
+AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <uxtheme.h>]])],
+                  [gtk_uxtheme_h=yes], [gtk_uxtheme_h=no])
 if test $gtk_uxtheme_h = yes; then
    AC_DEFINE(HAVE_UXTHEME_H, 1, [Have uxtheme.h include file])
 fi