Merge branch 'nd/struct-pathspec'

* nd/struct-pathspec:
pathspec: rename per-item field has_wildcard to use_wildcard
Improve tree_entry_interesting() handling code
Convert read_tree{,_recursive} to support struct pathspec
Reimplement read_tree_recursive() using tree_entry_interesting()

diff --cc builtin/checkout.c
Simple merge

diff --cc builtin/grep.c
Simple merge

diff --cc builtin/log.c
Simple merge

diff --cc cache.h
Simple merge

diff --cc dir.c
Simple merge

diff --cc list-objects.c
Simple merge

diff --cc merge-recursive.c
Simple merge

diff --cc tree-diff.c
Simple merge