Fix #1277 use rsync -c option as all output is rewritten

Because Pelican always rewrites all output, the mtimes always change, so
rsync would always transfer all the files which defeats the purpose of
rsync. The '-c' option (--checksum) compares the checksums rather than
mtimes.

pelican/tools/templates/Makefile.in

@@ -88,7 +88,7 @@ ssh_upload: publish
 	scp -P $$(SSH_PORT) -r $$(OUTPUTDIR)/* $$(SSH_USER)@$$(SSH_HOST):$$(SSH_TARGET_DIR)
 
 rsync_upload: publish
-	rsync -e "ssh -p $(SSH_PORT)" -P -rvz --delete $(OUTPUTDIR)/ $(SSH_USER)@$(SSH_HOST):$(SSH_TARGET_DIR) --cvs-exclude
+	rsync -e "ssh -p $(SSH_PORT)" -P -rvzc --delete $(OUTPUTDIR)/ $(SSH_USER)@$(SSH_HOST):$(SSH_TARGET_DIR) --cvs-exclude
 
 dropbox_upload: publish
 	cp -r $$(OUTPUTDIR)/* $$(DROPBOX_DIR)

pelican/tools/templates/fabfile.py.in

@@ -68,5 +68,6 @@ def publish():
         remote_dir=dest_path,
         exclude=".DS_Store",
         local_dir=DEPLOY_PATH.rstrip('/') + '/',
-        delete=True
+        delete=True,
+        extra_opts='-c',
     )