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/mysql_utils.h

@@ -0,0 +1,33 @@
+#ifndef _MYSQL_UTILS_H
+#define _MYSQL_UTILS_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.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <mysql.h>
+#include <maxscale/server.h>
+
+/** Length-encoded integers */
+size_t leint_bytes(uint8_t* ptr);
+uint64_t leint_value(uint8_t* c);
+uint64_t leint_consume(uint8_t ** c);
+
+/** Length-encoded strings */
+char* lestr_consume_dup(uint8_t** c);
+char* lestr_consume(uint8_t** c, size_t *size);
+
+
+MYSQL *mxs_mysql_real_connect(MYSQL *mysql, SERVER *server, const char *user, const char *passwd);
+
+#endif