Move headers from server/include to include/maxscale

- Headers now to be included as <maxscale/xyz.h>
- First step, no cleanup of headers has been made. Only moving
  from one place to another + necessary modifications.

include/maxscale/random_jkiss.h

@@ -0,0 +1,33 @@
+#ifndef RANDOM_JKISS_H
+#define RANDOM_JKISS_H
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl.
+ *
+ * Change Date: 2019-07-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+/*
+ * File:   random_jkiss.h
+ * Author: mbrampton
+ *
+ * Created on 26 August 2015, 15:34
+ */
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+extern unsigned int random_jkiss(void);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  /* RANDOM_H */