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>

systemd/Makefile

@@ -0,0 +1,45 @@
+include ../common.mak
+
+SYSTEM_UNITS = ttyrun-getty@.service iucvtty-login@.service \
+               cpacfstatsd.service cpuplugd.service \
+               dumpconf.service cpi.service \
+               mon_fsstatd.service mon_procd.service
+
+all:
+
+system_units: $(SYSTEM_UNITS)
+
+check:
+
+ifneq (${SYSTEMDSYSTEMUNITDIR},)
+
+install: system_units
+	for unit in $(SYSTEM_UNITS); do \
+	  $(INSTALL) -g $(GROUP) -o $(OWNER) \
+	             -m 644 $$unit $(DESTDIR)$(SYSTEMDSYSTEMUNITDIR) ; \
+	done
+	# For systemd install dumpconf to TOOLS_LIBDIR
+	$(INSTALL) -m 755 ../etc/init.d/dumpconf $(DESTDIR)$(TOOLS_LIBDIR)
+
+else
+
+install:
+
+endif
+
+clean:
+	rm -f $(SYSTEM_UNITS)
+
+%: %.in
+	real_bin_dir=$(BINDIR); \
+	real_usrbin_dir=$(USRBINDIR); \
+	real_usrsbin_dir=$(USRSBINDIR); \
+	real_toolslib_dir=$(TOOLS_LIBDIR); \
+	$(SED) -e "s#@bin_path@#$$real_bin_dir#g" \
+	       -e "s#@usrbin_path@#$$real_usrbin_dir#g" \
+	       -e "s#@usrsbin_path@#$$real_usrsbin_dir#g" \
+	       -e "s#@toolslib_path@#$$real_toolslib_dir#g" \
+	       -e 's#@S390_TOOLS_RELEASE@#$(S390_TOOLS_RELEASE)#g' \
+	< $< > $@
+
+.PHONY: all check install clean system_units