Fix links to github PRs under 'Additions' section on release note.
Merge pull request #969 from basho/bugfix/fix-gh-link-on-releasenote

Fix links to github PRs under 'Additions' section on release note.

Reviewed-by: shino
update releasenote.ja for 1.5.1.
Merge pull request #984 from basho/feature/relnote-1.5.1-ja

Update releasenote.ja for 1.5.1.

Reviewed-by: shino
Add script to repair invalid state manifests in the GC bucket
Add test for the script to repair invalid state manifests in the GC bucket
Remove dummy error, oops
Fix bug in repair manifest test under multibag configuration
Merge pull request #983 from basho/feature/repair-invalid-gc-manifests

Add script to repair invalid gc manifests

Reviewed-by: kuenishi
Merge release/1.5 to avoid conflict