Initial s390-tools-2.0.0 import

This commit is based on the s390-tools-1.39.0 version.

Changes on top of s390-tools-1.39.0:

 - Add MIT license to all source files
 - Add LICENSE file
 - Transform REAMDE to README.md (markdown)
 - Add AUTHORS.md file
 - Add CONTRIBUTING.md file
 - Move changelog from README to CHANGELOG.md file

Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>

zdev/include/modprobe.h

@@ -0,0 +1,24 @@
+/*
+ * zdev - Modify and display the persistent configuration of devices
+ *
+ * Copyright IBM Corp. 2016, 2017
+ *
+ * s390-tools is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#ifndef MODPROBE_H
+#define MODPROBE_H
+
+#include "exit_code.h"
+#include "misc.h"
+
+struct attrib;
+struct setting_list;
+
+exit_code_t modprobe_read_settings(const char *, const char *,
+				   struct attrib **, struct setting_list **);
+exit_code_t modprobe_write_settings(const char *, const char *,
+				    struct setting_list *);
+
+#endif /* MODPROBE_H */