the testsuite hangs on s390x when testing locking mechanism sysvsem. Work
around by avoid use semtimedop for s390x.

diff --git a/locks/unix/proc_mutex.c b/locks/unix/proc_mutex.c
index 8e2187f..cad6c4a 100644
--- a/locks/unix/proc_mutex.c
+++ b/locks/unix/proc_mutex.c
@@ -449,7 +449,7 @@ static const apr_proc_mutex_unix_lock_methods_t mutex_sysv_methods =
     proc_mutex_sysv_create,
     proc_mutex_sysv_acquire,
     proc_mutex_sysv_tryacquire,
-#if defined(HAVE_SEMTIMEDOP)
+#if defined(HAVE_SEMTIMEDOP) && !defined(__s390x__)
     proc_mutex_sysv_timedacquire,
 #else
     proc_mutex_spinsleep_timedacquire,