[banshee/gtk3] build: as ${gtk_version} is not used anymore, hardcode "3"

[AndrÃs Aragoneses <aaragoneses src gnome org>]

commit 968f0fc0573b13f2af9a054df8a9a1db285d9ea2
Author: Andres G. Aragoneses <knocte gmail com>
Date:   Tue Jul 26 23:08:46 2011 +0100

    build: as ${gtk_version} is not used anymore, hardcode "3"
    
    This branch does not have gtk# version distinction anymore,
    so we add a hardcoded version "3" to the configure summary.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8f7ba4f..fb14a70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -369,7 +369,7 @@ ${PACKAGE}-${VERSION}
     C Compiler:            ${CC}
     Mono C# Compiler:      ${MCS} ${GMCS_FLAGS}
     Mono Runtime:          ${MONO}
-    Gtk#:                  ${gtk_version}
+    Gtk#:                  3
 
   Video/Graphics:
     Graphics System:       ${GRAPHICS_SUBSYSTEM}