Re: What's cooking in git.git (Nov 2014, #04; Wed, 26)

> * nd/untracked-cache (2014-10-27) 19 commits
>  - t7063: tests for untracked cache
>  - update-index: test the system before enabling untracked cache
>  - update-index: manually enable or disable untracked cache
>  - status: enable untracked cache
>  - untracked cache: mark index dirty if untracked cache is updated
>  - untracked cache: print stats with $GIT_TRACE_UNTRACKED_STATS
>  - untracked cache: avoid racy timestamps
>  - read-cache.c: split racy stat test to a separate function
>  - untracked cache: invalidate at index addition or removal
>  - untracked cache: load from UNTR index extension
>  - untracked cache: save to an index extension
>  - untracked cache: don't open non-existent .gitignore
>  - untracked cache: mark what dirs should be recursed/saved
>  - untracked cache: record/validate dir mtime and reuse cached output
>  - untracked cache: make a wrapper around {open,read,close}dir()
>  - untracked cache: invalidate dirs recursively if .gitignore changes
>  - untracked cache: initial untracked cache validation
>  - untracked cache: record .gitignore information and dir hierarchy
>  - dir.c: optionally compute sha-1 of a .gitignore file