Merge branch 'maint'

* maint:
use xmemdupz() to allocate copies of strings given by start and length
use xcalloc() to allocate zero-initialized memory

diff --cc builtin/apply.c
Simple merge

diff --cc builtin/blame.c
Simple merge

diff --cc builtin/index-pack.c
Simple merge

diff --cc compat/mingw.c
Simple merge

diff --cc connect.c
Simple merge

diff --cc http-backend.c
Simple merge

diff --cc path.c
Simple merge

diff --cc pathspec.c
Simple merge