install init.d files on GNU/kFreeBSD

Review: https://reviewboard.asterisk.org/r/4118/
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Merged revisions 426926 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 426927 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 426933 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@426934 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -790,7 +790,7 @@ install-logrotate:
 	rm -f contrib/scripts/asterisk.logrotate.tmp
 
 config:
-	@if [ "${OSARCH}" = "linux-gnu" ]; then \
+	@if [ "${OSARCH}" = "linux-gnu" -o "${OSARCH}" = "kfreebsd-gnu" ]; then \
 		if [ -f /etc/redhat-release -o -f /etc/fedora-release ]; then \
 			./build_tools/install_subst contrib/init.d/rc.redhat.asterisk  "$(DESTDIR)/etc/rc.d/init.d/asterisk"; \
 			if [ ! -f "$(DESTDIR)/etc/sysconfig/asterisk" ] ; then \