6480245 renaming a dataset to something with '%s' will cause segfault

[lin.l...@sun.com]

Author: lling
Repository: /hg/onnv/onnv-gate
Latest revision: ef9096a164874c006d54b6816788e756ebbf199e
Total changesets: 1
Log message:
6480245 renaming a dataset to something with '%s' will cause segfault

Files:
        update: usr/src/lib/libzfs/common/libzfs_dataset.c
        update: usr/src/lib/libzfs/common/libzfs_impl.h
        update: usr/src/lib/libzfs/common/libzfs_import.c
        update: usr/src/lib/libzfs/common/libzfs_mount.c
        update: usr/src/lib/libzfs/common/libzfs_pool.c
        update: usr/src/lib/libzfs/common/libzfs_util.c