Merge branch 'xx/bundie-uri-fixes'

When bundleURI interface fetches multiple bundles, Git failed to
take full advantage of all bundles and ended up slurping duplicated
objects.

* xx/bundie-uri-fixes:
  unbundle: extend object verification for fetches
  fetch-pack: expose fsckObjects configuration logic
  bundle-uri: verify oid before writing refs

diff --cc bundle-uri.c
Simple merge

diff --cc bundle.c
Simple merge

diff --cc fetch-pack.c
Simple merge

diff --cc t/t5607-clone-bundle.sh
Simple merge

diff --cc transport.c
Simple merge