* fhandler_disk_file.cc (fhandler_disk_file::link): Use FILE_ANY_ACCESS.

	* fhandler_disk_file.cc (fhandler_disk_file::link): Use FILE_ANY_ACCESS.
	(fhandler_base::utimes_fs): Fix white space.
	(fhandler_disk_file::lock): Remove 9x blurb from comment.
	(fhandler_disk_file::mkdir): Use NtCreateFile/NtClose instead of
	CreateDirectoryA.
	(fhandler_disk_file::rmdir): Accommodate changes to unlink_nt.
	Simplify post-delete SMB-related tests.  Use NtQueryAttributesFile
	instead of GetFileAttributes.
	* ntdll.h (STATUS_DIRECTORY_NOT_EMPTY): Define.
	(NtQueryAttributesFile): Declare.
	* syscalls.cc (unlink_nt): Return NTSTATUS.  Drop setattrs parameter.
	Never use FILE_DELETE_ON_CLOSE, always use
	NtSetInformationFile(FileDispositionInformation) instead.
	Check for R/O attributes and open file with FILE_WRITE_ATTRIBUTES
	access if any of them are set.  Remove R/O attributes before
	marking for delete if necessary.  Revert them afterwards if necessary.
	(unlink): Accommodate changes to unlink_nt.