Indexes 7: Adds a lock file around index generation and updates#1354

dcookspi wants to merge 1 commit intoindex-5-zplus-1-versionfilters-not-stringsspkenv/spk:index-5-zplus-1-versionfilters-not-stringsfrom

index-7-lockfile-for-indexgenspkenv/spk:index-7-lockfile-for-indexgenCopy head branch name to clipboard