Bump version number in light of new kernel and build system that finally works fully.
diff --git a/configure.ac b/configure.ac
index 74a2b9b..1087e53 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([cgminer], [1.2.2])
+AC_INIT([cgminer], [1.2.3])
AC_PREREQ(2.59)
AC_CANONICAL_SYSTEM