Merge ACPICA 20130823.
MFV r254746:

To quote original Illumos ticket:

libctf thinks that any ELF file containing more than 65536 sections is
corrupt, because it doesn't understand the SHN_XINDEX magic.

Illumos DTrace issues:
  4005 libctf can't deal with extended sections
MFV r254747:

Fix a panic from dbuf_free_range() from dmu_free_object() while
doing zfs receive.  This is a regression from FreeBSD r253821.

Illumos ZFS issues:
  4047 panic from dbuf_free_range() from dmu_free_object() while
       doing zfs receive