Work around missing MSAN instrumentation

Let us skip the recently added test main.mysql-interactive if
an instrumented ncurses library is not available.

In InnoDB, let us work around an uninstrumented libnuma, by
declaring that the objects returned by numa_get_mems_allowed()
are initialized.

mysql-test/main/mysql-interactive.test

@@ -3,6 +3,8 @@
 --echo #
 source include/not_embedded.inc;
 source include/not_windows.inc;
+# this would need an instrumented ncurses library
+source include/not_msan.inc;
 
 error 0,1;
 exec $MYSQL -V|grep -q readline;