release: drop release/ (#2173)

Drop the release/ dir prefix form the uploaded files.
Signed-off-by: Miek Gieben <miek@miek.nl>

Makefile.release

@@ -92,23 +92,23 @@ github-push:
 	@echo Releasing: $(VERSION)
 	@$(eval RELEASE:=$(shell curl -s -d '{"tag_name": "v$(VERSION)", "name": "v$(VERSION)"}' "https://api.github.com/repos/$(GITHUB)/$(NAME)/releases?access_token=${GITHUB_ACCESS_TOKEN}" | grep -m 1 '"id"' | tr -cd '[[:digit:]]'))
 	@echo ReleaseID: $(RELEASE)
-	@for asset in `ls -A release/*tgz`; do \
+	@( cd release; for asset in `ls -A *tgz`; do \
 	    echo $$asset; \
 	    curl -o /dev/null -X POST \
 	      -H "Content-Type: application/gzip" \
 	      --data-binary "@$$asset" \
 	      "https://uploads.github.com/repos/$(GITHUB)/$(NAME)/releases/$(RELEASE)/assets?name=$${asset}&access_token=${GITHUB_ACCESS_TOKEN}" ; \
-	done
-	for asset in `ls -A release/*tgz`; do \
+	done )
+	@( cd release; for asset in `ls -A *tgz`; do \
 	    sha256sum $$asset > $$asset.sha256; \
-	done
-	@for asset in `ls -A release/*sha256`; do \
+	done )
+	@( cd release; for asset in `ls -A *sha256`; do \
 	    echo $$asset; \
 	    curl -o /dev/null -X POST \
 	      -H "Content-Type: text/plain" \
 	      --data-binary "@$$asset" \
 	      "https://uploads.github.com/repos/$(GITHUB)/$(NAME)/releases/$(RELEASE)/assets?name=$${asset}&access_token=${GITHUB_ACCESS_TOKEN}" ; \
-	done
+	done )
 
 .PHONY: docker-build
 docker-build: tar