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/dracut/Makefile

@@ -0,0 +1,21 @@
+# Common definitions
+include ../../common.mak
+
+MODDIR := /usr/lib/dracut/modules.d/
+ZDEVDIR := 95zdev
+
+# HAVE_DRACUT
+#
+# This install time parameter determines whether the zdev dracut module is
+# installed (HAVE_DRACUT=1) or not (default). When installed, the module
+# performs the following functions when dracut is run:
+#
+#  - copy the persistent root device configuration to the initial ram disk
+#
+ifeq ($(HAVE_DRACUT),1)
+install:
+	$(INSTALL) -m 755 -d $(DESTDIR)$(MODDIR)
+	$(INSTALL) -m 755 -d $(DESTDIR)$(MODDIR)/$(ZDEVDIR)
+	$(INSTALL) -m 755 $(ZDEVDIR)/module-setup.sh \
+		$(DESTDIR)$(MODDIR)/$(ZDEVDIR)/
+endif