Added missing newlines to all files

This caused build errors some systems, namely RHEL 5.

server/core/gw_ssl.c

@@ -184,4 +184,4 @@ bool
 ssl_required_but_not_negotiated(DCB *dcb)
 {
     return (NULL != dcb->listen_ssl && SSL_HANDSHAKE_UNKNOWN == dcb->ssl_state);
-}
+}

server/core/session.c

@@ -1117,4 +1117,4 @@ static void
 mysql_auth_free_client_data(DCB *dcb)
 {
     free(dcb->data);
-}
+}

server/include/gw_ssl.h

@@ -83,4 +83,4 @@ bool ssl_check_data_to_process(struct dcb *dcb);
 bool ssl_required_by_dcb(struct dcb *dcb);
 bool ssl_required_but_not_negotiated(struct dcb *dcb);
 
-#endif /* _GW_SSL_H */
+#endif /* _GW_SSL_H */

server/include/listener.h

@@ -58,4 +58,4 @@ int listener_set_ssl_version(SSL_LISTENER *ssl_listener, char* version);
 void listener_set_certificates(SSL_LISTENER *ssl_listener, char* cert, char* key, char* ca_cert);
 int listener_init_SSL(SSL_LISTENER *ssl_listener);
 
-#endif
+#endif