NTFS: Change ntfs_map_runlist_nolock() to also take an optional attribute

      search context.  This allows calling it with the mft record mapped.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

diff --cc fs/ntfs/ChangeLog
Simple merge

diff --cc fs/ntfs/Makefile
Simple merge

diff --cc fs/ntfs/attrib.c
Simple merge

diff --cc fs/ntfs/attrib.h
Simple merge