Create directories for client install

When ``make client-install`` is called, create /etc/ipa and
/var/lib/ipa-client/sysrestore directories required for successful use of
ipa-client-install.

Do it only if DESTDIR is set to help packagers to notice that these
directories have to exist

https://fedorahosted.org/freeipa/ticket/1849

Makefile

@@ -68,7 +68,7 @@ install: all server-install
 		(cd $$subdir && $(MAKE) $@) || exit 1; \
 	done
 
-client-install: client
+client-install: client client-dirs
 	@for subdir in $(CLIENTDIRS); do \
 		(cd $$subdir && $(MAKE) install) || exit 1; \
 	done
@@ -79,6 +79,15 @@ client-install: client
 		python setup-client.py install --root $(DESTDIR); \
 	fi
 
+client-dirs:
+	@if [ "$(DESTDIR)" != "" ] ; then \
+		mkdir -p $(DESTDIR)/etc/ipa ; \
+		mkdir -p $(DESTDIR)/var/lib/ipa-client/sysrestore ; \
+	else \
+		echo "DESTDIR was not set, please create /etc/ipa and /var/lib/ipa-client/sysrestore" ; \
+		echo "Without those directories ipa-client-install will fail" ; \
+	fi
+
 lint:
 	./make-lint $(LINT_OPTIONS)