contrib/lastmod: install man page

Update lastmod's Makefile to install the manual page too.

contrib/slapd-modules/lastmod/Makefile

@@ -7,13 +7,15 @@ LDAP_LIB = $(LDAP_BUILD)/libraries/libldap_r/libldap_r.la \
 	$(LDAP_BUILD)/libraries/liblber/liblber.la
 
 LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
 CC = gcc
 OPT = -g -O2 -Wall
 DEFS = -DSLAPD_OVER_LASTMOD=SLAPD_MOD_DYNAMIC
 INCS = $(LDAP_INC)
 LIBS = $(LDAP_LIB)
 
 PROGRAMS = lastmod.la
+MANPAGES = slapo-lastmod.5
 LTVER = 0:0:0
 
 prefix=/usr/local
@@ -23,6 +25,8 @@ ldap_subdir=/openldap
 libdir=$(exec_prefix)/lib
 libexecdir=$(exec_prefix)/libexec
 moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
 
 .SUFFIXES: .c .o .lo
 
@@ -38,10 +42,17 @@ lastmod.la: lastmod.lo
 clean:
 	rm -rf *.o *.lo *.la .libs
 
-install: $(PROGRAMS)
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
 	mkdir -p $(DESTDIR)$(moduledir)
 	for p in $(PROGRAMS) ; do \
 		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
 	done
 
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE: