From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 7 Mar 2019 00:59:56 +0000 (+0900)
Subject: Merge branch 'jk/prune-optim'
X-Git-Tag: v2.22.0-rc0~168
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f7213a3d33f81035c0707b0f547462ecfa620223;p=git

Merge branch 'jk/prune-optim'

"git prune" has been taught to take advantage of reachability
bitmap when able.

* jk/prune-optim:
  t5304: rename "sha1" variables to "oid"
  prune: check SEEN flag for reachability
  prune: use bitmaps for reachability traversal
  prune: lazily perform reachability traversal
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f7213a3d33f81035c0707b0f547462ecfa620223