MFC: r219339, r219532

MFC: r219339, r219532

- Remove clause 3 and 4 from TNF licenses. [1]
- Add the _RF_X committed in r212998 (merged to stable/8 in r213478) also
  to the tables in the sparc64 reloc.c in order reduce differences between
  the kernel and the userland source. This results in no functional change
  though.
- Consistently abbreviate the names of the relocations.
- End sentences with dots.
- Fix whitespace.

Obtained from:	NetBSD [1]

git-svn-id: svn://svn.freebsd.org/base/stable/8@219940 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f