[libsoup] belated bump to 2.57.0

[Dan Winship <danw src gnome org>]

commit 0868f5ff7423c8eff6ffb22da76806b1337696cf
Author: Dan Winship <danw gnome org>
Date:   Sun Nov 13 11:08:46 2016 -0500

    belated bump to 2.57.0

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3cabf3b..b08233c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl *** Initialize automake and set version ***
 dnl *******************************************
 
 m4_define([soup_major_version], [2])
-m4_define([soup_minor_version], [56])
+m4_define([soup_minor_version], [57])
 m4_define([soup_micro_version], [0])
 
 AC_PREREQ(2.63)