Makefile: Also install manpage for lightningd.

Makefile

@@ -467,6 +467,7 @@ mandir = $(datadir)/man
 man1dir = $(mandir)/man1
 man5dir = $(mandir)/man5
 man7dir = $(mandir)/man7
+man8dir = $(mandir)/man8
 
 # Commands
 MKDIR_P = mkdir -p
@@ -491,6 +492,7 @@ installdirs:
 	$(MKDIR_P) $(DESTDIR)$(man1dir)
 	$(MKDIR_P) $(DESTDIR)$(man5dir)
 	$(MKDIR_P) $(DESTDIR)$(man7dir)
+	$(MKDIR_P) $(DESTDIR)$(man8dir)
 	$(MKDIR_P) $(DESTDIR)$(docdir)
 
 # Programs to install in bindir and pkglibexecdir.
@@ -518,13 +520,15 @@ install-program: installdirs $(BIN_PROGRAMS) $(PKGLIBEXEC_PROGRAMS) $(PLUGINS)
 MAN1PAGES = $(filter %.1,$(MANPAGES))
 MAN5PAGES = $(filter %.5,$(MANPAGES))
 MAN7PAGES = $(filter %.7,$(MANPAGES))
+MAN8PAGES = $(filter %.8,$(MANPAGES))
 DOC_DATA = README.md doc/INSTALL.md doc/HACKING.md LICENSE
 
-install-data: installdirs $(MAN1PAGES) $(MAN5PAGES) $(MAN7PAGES) $(DOC_DATA)
+install-data: installdirs $(MAN1PAGES) $(MAN5PAGES) $(MAN7PAGES) $(MAN8PAGES) $(DOC_DATA)
 	@$(NORMAL_INSTALL)
 	$(INSTALL_DATA) $(MAN1PAGES) $(DESTDIR)$(man1dir)
 	$(INSTALL_DATA) $(MAN5PAGES) $(DESTDIR)$(man5dir)
 	$(INSTALL_DATA) $(MAN7PAGES) $(DESTDIR)$(man7dir)
+	$(INSTALL_DATA) $(MAN8PAGES) $(DESTDIR)$(man8dir)
 	$(INSTALL_DATA) $(DOC_DATA) $(DESTDIR)$(docdir)
 
 install: install-program install-data
@@ -555,6 +559,10 @@ uninstall:
 	  echo rm -f $(DESTDIR)$(man7dir)/`basename $$f`; \
 	  rm -f $(DESTDIR)$(man7dir)/`basename $$f`; \
 	done
+	@for f in $(MAN8PAGES); do \
+	  echo rm -f $(DESTDIR)$(man8dir)/`basename $$f`; \
+	  rm -f $(DESTDIR)$(man8dir)/`basename $$f`; \
+	done
 	@for f in $(DOC_DATA); do \
 	  echo rm -f $(DESTDIR)$(docdir)/`basename $$f`; \
 	  rm -f $(DESTDIR)$(docdir)/`basename $$f`; \