don't pass nameidata to ->follow_link()

its only use is getting passed to nd_jump_link(), which can obtain
it from current->nameidata

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc Documentation/filesystems/Locking
Simple merge

diff --cc Documentation/filesystems/vfs.txt
Simple merge

diff --cc drivers/staging/lustre/lustre/llite/symlink.c
Simple merge

diff --cc fs/9p/vfs_inode.c
Simple merge

diff --cc fs/9p/vfs_inode_dotl.c
Simple merge

diff --cc fs/autofs4/symlink.c
Simple merge

diff --cc fs/befs/linuxvfs.c
Simple merge

diff --cc fs/cifs/cifsfs.h
Simple merge

diff --cc fs/cifs/link.c
Simple merge

diff --cc fs/configfs/symlink.c
Simple merge

diff --cc fs/ecryptfs/inode.c
Simple merge

diff --cc fs/ext4/symlink.c
Simple merge

diff --cc fs/f2fs/namei.c
Simple merge

diff --cc fs/fuse/dir.c
Simple merge

diff --cc fs/gfs2/inode.c
Simple merge

diff --cc fs/hostfs/hostfs_kern.c
Simple merge

diff --cc fs/hppfs/hppfs.c
Simple merge

diff --cc fs/kernfs/symlink.c
Simple merge

diff --cc fs/libfs.c
Simple merge

diff --cc fs/namei.c
Simple merge

diff --cc fs/nfs/symlink.c
Simple merge

diff --cc fs/overlayfs/inode.c
Simple merge

diff --cc fs/proc/base.c
Simple merge

diff --cc fs/proc/inode.c
Simple merge

diff --cc fs/proc/namespaces.c
Simple merge

diff --cc fs/proc/self.c
Simple merge

diff --cc fs/proc/thread_self.c
Simple merge

diff --cc fs/xfs/xfs_iops.c
Simple merge

diff --cc include/linux/fs.h
Simple merge

diff --cc include/linux/namei.h
Simple merge

diff --cc mm/shmem.c
Simple merge