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>

dasdinfo/Makefile

@@ -0,0 +1,20 @@
+include ../common.mak
+
+libs = $(rootdir)/libu2s/libu2s.a \
+       $(rootdir)/libutil/libutil.a
+
+all: dasdinfo
+
+dasdinfo: dasdinfo.o $(libs)
+
+install: all
+	$(INSTALL) -d -m 755 $(DESTDIR)$(BINDIR) \
+		$(DESTDIR)$(MANDIR)/man8
+	$(INSTALL) -g $(GROUP) -o $(OWNER) -m 755 dasdinfo $(DESTDIR)$(BINDIR)
+	$(INSTALL) -g $(GROUP) -o $(OWNER) -m 644 dasdinfo.8 \
+		$(DESTDIR)$(MANDIR)/man8
+
+clean:
+	rm -f *.o *~ dasdinfo core
+
+.PHONY: all install clean