Merge branch 'rs/leave-base-name-in-name-field-of-tar' into maint

A tar archive created by "git archive" recorded a directory in a
way that made NetBSD's implementation of "tar" sometimes unhappy.

* rs/leave-base-name-in-name-field-of-tar:
archive-tar: split long paths more carefully

diff --cc archive-tar.c
Simple merge