Merge branch 'ds/status-with-sparse-index'

"git status" codepath learned to work with sparsely populated index without hydrating it fully. * ds/status-with-sparse-index: t1092: document bad sparse-checkout behavior fsmonitor: integrate with sparse index wt-status: expand added sparse directory entries status: use sparse-index throughout status: skip sparse-checkout percentage with sparse-index diff-lib: handle index diffs with sparse dirs dir.c: accept a directory as part of cone-mode patterns unpack-trees: unpack sparse directory entries unpack-trees: rename unpack_nondirectories() unpack-trees: compare sparse directories correctly unpack-trees: preserve cache_bottom t1092: add tests for status/add and sparse files t1092: expand repository data shape t1092: replace incorrect 'echo' with 'cat' sparse-index: include EXTENDED flag when expanding sparse-index: skip indexes with unmerged entries