Updates from 1.0.0-stable

apps/s_server.c

diff --git a/apps/s_server.c b/apps/s_server.c
index 6bbbd7f..6c9e6ba 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -298,7 +298,9 @@
 
 static int enable_timeouts = 0;
 static long socket_mtu;
+#ifndef OPENSSL_NO_DTLS1
 static int cert_chain = 0;
+#endif
 
 #ifndef OPENSSL_NO_PSK
 static char *psk_identity="Client_identity";