Merge PR #62095 into squid

* refs/pull/62095/head:
	include/cephfs: dump optmetadata
	mds: set alternate_name for new fullbit dentries
	qa: test alternate_name recovery during mds failover
	client: avoid multiple calls to path_walk
	libcephfs: getcwd after chdir for API constraint
	client: unwrap dentries for getcwd
	client: refactor / optimize chdir
	test/libcephfs: test getcwd with case insensitive dir
	test/libcephfs: refactor ManyNestedDirs
	include/filepath: add iterators for components
	cmake/cephfs: fix options to enable client and dependencies
	pybind/cephfs: use legacy noexcept for cdefs for cython 3.Y.Z
	pybind/cephfs: increment ref before calling out to c++
	client: skip unexpected command replies
	mgr: indicate map message is acked instead of unhandled
	osdc/Objecter: convert to ms_dispatch2 for ack
	client: indicate maps are acked not processed
	msg: add alternate statuses for ms_dispatch2 handling
	tools/cephfs_mirror: do not process maps with fast dispatch
	doc: add docs for volumes interface for charmap
	qa: add tests for subvolume charmap settings
	pybind/mgr/volumes: wire up charmap for subvol/subvolgroup
	pybind/mgr: send MDS commands through cephfs client
	pybind/cephfs: wire up mds_command2
	mgr: add module method to send notifications
	libcephfs: add mds_command2 for asynchronous commands
	mgr: excise CephFS client from mgr C++ base
	mgr: use std namespace
	doc: add docs for CephFS charmap config
	qa: add charmap tests
	qa: add helpful exceptions for attr changes
	qa: ignore libicu leaks
	client: add wrappings for charmap manipuluation of dentry names
	client: add dir_result_t::dentry::print
	win32: add libicu Windows build
	CMakeLists: add boost::locale dependency for client
	install-deps: unconditionally install boost libraries
	test/libcephfs: update root operation return values
	client: refactor all path traversals through path_walk
	test/libcephfs: test parallel creates
	test/libcephfs: add test for lookup failure after readdir
	client: init dentry shared_gen with invalid value
	client: add _lookup debugging
	client: remove redundant check
	client: dump InodeStat from mds
	mds: encode optmetadata in InodeStat sent to clients
	mds: check client features for charmap
	mds: add client feature bit for charmap
	mds: wire up vxattr for changing charmap
	mds: inherit charmap on mkdir
	mds,include: add charmap optmetadata
	mds,include: add inode_t optional metadata
	client: hide alternate_name from API
	client: move alternate_name once
	client: optimize alternate_name passing to helper
	client: relocate definition
	client: print dentry with alternate_name on dump
	client: move inode dump to print method
	mds: add debugging for encoding lease stat
	mds: make encode_lease a proper method
	mds: add fscrypt metadata for inode stat size
	client: use DentryRef for ref counting in MetaRequest
	client: add DentryRef
	client: add helper for determining if a perm check is necessary
	client: cache client_permissions config
	client: add debugging for conf changes
	client: sort configs
	client/UserPerm: add print method
	client: note mount parameters in debug log
	client: print stat mode in octal
	common: add missing op string
	include/filepath: add empty path check
	python-common: add a utils function to replace distutils.util.strtobool

Reviewed-by: Anthony D Atri <anthony.datri@gmail.com>