Merge PR #32831 into master

Merge PR #32831 into master

* refs/pull/32831/head:
	common, include: drop the copy{_in} from bufferlist entirely.
	os/bluestore: switch copy_in() users to bufferlist::iterator.
	osdc: switch users of bufferlist::copy{_in} to iterators.
	osd: switch users of bufferlist::copy{_in} to iterators.
	rgw: switch copy{_in} users to bufferlist::iterator.
	ec: switch users of bufferlist::copy{_in} to iterators.
	cls/queue: switch users of bufferlist::copy{_in} to iterators.
	client: switch users of bufferlist::copy{_in} to iterators.
	*: switch trivial users of bufferlist::copy{_in} to iterators.
	test/bl: switch copy{_in} users to bufferlist::iterator.
	common, include: kill the bl::last_p member.
	common: encode for std::list<T> doesn't use bl::copy_in() anymore.

Reviewed-by: Kefu Chai <kchai@redhat.com>