Require mdds 0.9.1 in configure script.

Change-Id: Ib475ce5381c74218221ff86ff837705abd03b0ef
diff --git a/configure.ac b/configure.ac
index 37acab9..02a1687 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8663,7 +8663,7 @@ AC_SUBST(SYSTEM_BOOST)
dnl ===================================================================
dnl Check for system mdds
dnl ===================================================================
libo_CHECK_SYSTEM_MODULE([mdds], [MDDS], [mdds >= 0.9.0])
libo_CHECK_SYSTEM_MODULE([mdds], [MDDS], [mdds >= 0.9.1])

dnl ===================================================================
dnl Determine which hash container mdds shall use