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>

dump2tar/src/Makefile

@@ -0,0 +1,31 @@
+# Common definitions
+include ../../common.mak
+
+ALL_CPPFLAGS += -I../include -std=gnu99 -Wno-unused-parameter
+LDLIBS  += -lpthread -lrt
+ifneq ($(HAVE_ZLIB),0)
+ALL_CPPFLAGS += -DHAVE_ZLIB
+LDLIBS  += -lz
+endif
+
+core_objects = buffer.o dref.o global.o dump.o idcache.o misc.o strarray.o tar.o
+libs = $(rootdir)/libutil/libutil.a
+
+check_dep_zlib:
+	$(call check_dep, \
+			"dump2tar", \
+			"zlib.h", \
+			"zlib-devel or libz-dev", \
+			"HAVE_ZLIB=0")
+
+all: check_dep_zlib dump2tar
+
+dump2tar: $(core_objects) dump2tar.o $(libs)
+
+install: dump2tar
+	$(INSTALL) -c dump2tar $(DESTDIR)$(USRBINDIR)
+
+clean:
+	@rm -f dump2tar *.o
+
+.PHONY: all install clean