Branch.branch_point is slow because it computes commit details for every commit in your history. We should use lighter-weight 'git' commands in this function, since it is a major contributor to 'git-webkit pr' being slow.
<rdar://problem/109419012>
Pull request: https://github.com/WebKit/WebKit/pull/13934
Committed 264536@main (295115e98b2e): <https://commits.webkit.org/264536@main> Reviewed commits have been landed. Closing PR #13934 and removing active labels.
Committed 259548.782@safari-7615-branch (9d8c69db76df): <https://commits.webkit.org/259548.782@safari-7615-branch> Reviewed commits have been landed. Closing PR #621 and removing active labels.