Perform system installation of update service files

Separate installation step for other consumers
- Partial merge of PR from Graham Weldon

CHANGELOG

@@ -2,6 +2,8 @@
          - Fix invalid test cases on command line processing
          - Remove -c/--cadir flags, replace with -b/--bundledir to store
            all bundles in same location
+         - Perform system installation of update service files
+         - Separate installation step for other consumers
 0.9      - Use P11-Kit trust module to generate alternate certificate stores
            from trust policy
          - Only generate the trust store (and optionally NSSDB and Java PKCS#12)

Makefile

@@ -1,27 +1,43 @@
 MANDIR=/usr/share/man
 SBINDIR=/usr/sbin
-INIT=$(shell ps -p 1 --no-header | cut -d " " -f 15)
 
+all: make_ca man
 
-all:
-	chmod 755 make-ca help2man
+make_ca:
+	chmod 755 make-ca
+
+man: make_ca
+	chmod 755 help2man
 	./help2man -s 8 -N ./make-ca -i include.h2m -o make-ca.8
 
-clean:
-	rm -f make-ca.8
-	chmod 0644 help2man
+clean: clean_make_ca clean_man
+
+clean_make_ca:
 	chmod 0644 make-ca
 
-install: all
+clean_man:
+	rm -f make-ca.8
+	chmod 0644 help2man
+
+install: all install_bin install_man install_systemd
+
+install_bin:
 	/usr/bin/install -vdm755 $(DESTDIR)$(SBINDIR)
-	/usr/bin/install -vdm755 $(DESTDIR)$(MANDIR)/man8
 	install -vm755 make-ca $(DESTDIR)$(SBINDIR)
-	install -vm644 make-ca.8 $(DESTDIR)$(MANDIR)/man8
-	if test "$(INIT)" == "systemd"; then \
-	    install -vdm755 $(DESTDIR)/etc/systemd/system; \
-	    install -vm644 systemd/* $(DESTDIR)/etc/systemd/system; \
+
+install_systemd:
+	if test -d /usr/lib/systemd/system; then \
+	    install -vdm755 ${DESTDIR}/usr/lib/systemd/system; \
+	    install -vm644 systemd/* $(DESTDIR)/usr/lib/systemd/system; \
+	elif test -d /lib/systemd/system; then \
+	    install -vdm755 ${DESTDIR}/lib/systemd/system; \
+	    install -vm644 systemd/* ${DESTDIR}/lib/systemd/system; \
 	fi
 
+install_man:
+	/usr/bin/install -vdm755 $(DESTDIR)$(MANDIR)/man8
+	install -vm644 make-ca.8 $(DESTDIR)$(MANDIR)/man8
+
 uninstall:
 	rm -f $(DESTDIR)$(SBINDIR)/make-ca
 	rm -f $(DESTDIR)$(MANDIR)/man8/make-ca.8