Update release version to 1.2.0-rc1

Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/configure.ac b/configure.ac
index bef0e35..62a5502 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.67])
-AC_INIT([libibverbs],[1.1.8],[linux-rdma@vger.kernel.org])
+AC_INIT([libibverbs],[1.2.0-rc1],[linux-rdma@vger.kernel.org])
 AC_CONFIG_SRCDIR([src/ibverbs.h])
 AC_CONFIG_AUX_DIR(config)
 AC_CONFIG_MACRO_DIR(config)