Unbreakable Enterprise kernel security and bug fix update

[2.6.39-100.6.1]

• regset: Return -EFAULT, not -EIO, on host-side memory fault (H. Peter Anvin)
  {CVE-2012-1097}
• regset: Prevent null pointer reference on readonly regsets (H. Peter Anvin)
  {CVE-2012-1097}
• cifs: fix dentry refcount leak when opening a FIFO on lookup (Jeff Layton)
  {CVE-2012-1090}