update mdds check

Change-Id: I652d84f60a92369466f153a502022ac519312b22

configure.in

@@ -7488,29 +7488,9 @@ if test "$with_system_mdds" = "yes"; then
     CPPFLAGS="$CPPFLAGS $MDDS_CPPFLAGS"
     AC_CHECK_HEADER(mdds/flat_segment_tree.hpp, [],
         [AC_MSG_ERROR(mdds/flat_segment_tree.hpp not found. install mdds)], [])
-    AC_CHECK_HEADER(mdds/mixed_type_matrix.hpp, [],
-        [AC_MSG_ERROR(mdds/mixed_type_matrix.hpp not found. install mdds >= 0.4.0)], [])
+    AC_CHECK_HEADER(mdds/multi_type_matrix.hpp, [],
+        [AC_MSG_ERROR(mdds/multi_type_matrix.hpp not found. install mdds >= 0.6.0)], [])
     CPPFLAGS="$save_CPPFLAGS"
-    save_CXXFLAGS="$CXXFLAGS"
-    CXXFLAGS="$CXXFLAGS $MDDS_CPPFLAGS"
-    AC_MSG_CHECKING([for correct signature of ::mdds::flat_segment_tree])
-    AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <mdds/flat_segment_tree.hpp>
-
-    int main(int argc, char **argv) {
-        ::mdds::flat_segment_tree<long, short> db(0, 100, 0);
-        short val;
-        if (!db.search(5, val).second)
-            return 1;
-        return 0;
-    }
-]])],[ac_cv_cxx_mdds_flat_segment_tree_correct=yes],[ac_cv_cxx_mdds_flat_segment_tree_correct=no],[])
-
-    if test "$ac_cv_cxx_mdds_flat_segment_tree_correct" = "yes"; then
-        AC_MSG_RESULT([yes])
-    else
-        AC_MSG_ERROR([no, install mdds >= 0.5.0])
-    fi
-    CXXFLAGS=$save_CXXFLAGS
     AC_LANG_POP([C++])
 else
     AC_MSG_RESULT([internal])