Merge branch 'ds/fetch-bundle-uri-with-all'

"git fetch --all" does not have to download and handle the same
bundleURI over and over, which has been corrected.

* ds/fetch-bundle-uri-with-all:
  fetch: download bundles once, even with --all

diff --cc builtin/fetch.c
Simple merge

diff --cc bundle-uri.c
Simple merge