configure: Bump version to 0.5.1.

Ossama Othman · Ossama Othman · commit ee8770e91301 · 2020-12-13T21:14:28.000-08:00
diff --git a/configure.ac b/configure.ac
@@ -6,7 +6,7 @@
 
 AC_PREREQ([2.69])
 AC_INIT([mptcpd],
-        [0.5],
+        [0.5.1],
         [mptcp@lists.01.org],
         [],
         [https://01.org/multipath-tcp-linux])
