Change upload path to project/master/

Don't upload the manuals for master to "latest" anymore, this is
confusing given that we also refer to the most recent release as
"latest". Add the "master" directory to prepare a directory structure
where we can have manuals for each release:

  osmo-hlr/
  osmo-hlr/master/
  osmo-hlr/master/osmohlr-usermanual.pdf
  osmo-hlr/master/osmohlr-vty-reference.pdf

Related: OS#5902
Change-Id: Id090422afbd7b91ac78cc30e19372ac1c828cb6b

build/Makefile.common.inc

@@ -12,6 +12,8 @@ SYMLINKS = common build
 CLEAN_FILES += $(SYMLINKS)
 PDF_FILES = $(patsubst %.adoc,%.pdf,$(ASCIIDOC)) $(patsubst %.xml,%.pdf,$(VTY_REFERENCE))
 OSMO_REPOSITORY ?= osmo-gsm-manuals
+PUBLISH_REF ?= master
+PUBLISH_TEMPDIR = _publish_tmpdir
 
 # Prefix (Makefile.am sets this to configure's --prefix when including)
 prefix ?= /usr/local
@@ -28,7 +30,17 @@ clean:
 distclean: clean
 
 publish: $(UPLOAD_FILES)
-	rsync -avz -e "$(SSH_COMMAND)" $(UPLOAD_FILES) docs@ftp.osmocom.org:web-files/latest/
+	[ -n "$(OSMO_REPOSITORY)" ] || exit 1
+	rm -rf "$(PUBLISH_TEMPDIR)"
+	mkdir -p "$(PUBLISH_TEMPDIR)/$(OSMO_REPOSITORY)/$(PUBLISH_REF)"
+	cp $(UPLOAD_FILES) "$(PUBLISH_TEMPDIR)/$(OSMO_REPOSITORY)/$(PUBLISH_REF)"
+	cd "$(PUBLISH_TEMPDIR)" && \
+		rsync \
+			-avzR \
+			-e "$(SSH_COMMAND)" \
+			"$(OSMO_REPOSITORY)" \
+			docs@ftp.osmocom.org:web-files/
+	rm -rf "$(PUBLISH_TEMPDIR)"
 
 # Install and uninstall targets
 # Notes about OSMO_GSM_MANUALS_NO_INSTALL: