MFC 196045 through 231537

MFC 196045 through 231537
   - this records svn:mergeinfo for previously merged changesets

This pulls in changes such as:

MFC 216370
  - Remove adertising clause from UCB copyrighted files in usr.bin

MFC 222534
  - Fix a couple of spelling errors.

MFC 223493
  - Remove duplicated header files

MFC 223135 - 223491
  - man page updates

MFC 229403
  - Replace index() and rindex() calls with strchr() and strrchr().

MFC 230044
  - fgets(3) returns a pointer, so compare against NULL, not integer 0.

git-svn-id: svn://svn.freebsd.org/base/stable/8@231538 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f