Sync with v2.16.1
authorJunio C Hamano <gitster@pobox.com>
Mon, 22 Jan 2018 05:14:54 +0000 (21:14 -0800)
committerJunio C Hamano <gitster@pobox.com>
Mon, 22 Jan 2018 05:14:54 +0000 (21:14 -0800)
* maint:
Git 2.16.1
t5601-clone: test case-conflicting files on case-insensitive filesystem
repository: pre-initialize hash algo pointer

Trivial merge