Merge branch 'release-1.2' into develop

Conflicts:
	server/core/adminusers.c
	server/modules/protocol/mysql_client.c

server/core/adminusers.c

@@ -19,6 +19,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 700
+#endif
 #include <unistd.h>
 #include <crypt.h>
 #include <users.h>

server/core/buffer.c

@@ -197,6 +197,7 @@ GWBUF	*rval;
         rval->gwbuf_info = buf->gwbuf_info;
         rval->gwbuf_bufobj = buf->gwbuf_bufobj;
 	rval->tail = rval;
+	rval->next = NULL;
         CHK_GWBUF(rval);
 	return rval;
 }