[gucharmap] Fix help message for --with-gtk, GTK+ 2.0 is unsupported.

[Jordi Mallach <jordim src gnome org>]

commit 7308ba9512d82c7750303f551033086fe0727257
Author: Jordi Mallach <jordi sindominio net>
Date:   Tue Oct 11 18:56:11 2011 +0200

    Fix help message for --with-gtk, GTK+ 2.0 is unsupported.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4ab385d..36d289b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -81,7 +81,7 @@ AM_CONDITIONAL(OS_WIN32, test "x$os_win32" = "xyes")
 
 AC_MSG_CHECKING([which gtk+ version to compile against])
 AC_ARG_WITH([gtk],
-  [AS_HELP_STRING([--with-gtk=3.0],[which gtk+ version to compile against (default: 2.0)])],
+  [AS_HELP_STRING([--with-gtk=3.0],[which gtk+ version to compile against (default: 3.0)])],
   [case "$with_gtk" in
      3.0) ;;
      2.0) AC_MSG_ERROR([unsupported gtk version $with_gtk specified]) ;;