Merge branch 'rs/discard-index-discard-array' into maint

* rs/discard-index-discard-array: read-cache: free cache in discard_index read-cache: add simple performance test

Junio C Hamano committed Jul 19, 2013 at 10:39 UTC 65ed8684c4ef5a36f2d172f1cb8b88d993c0e4ec

No changes.