FreeBSD/src faf5dd8 (r328306)bin/ps ps.1 keyword.c

Remove some KSE references from ps(1).

- Simplify the description of -H to assume 1:1 threading.
- Drop 'process' from description of 'lwp' field and the corresponding
  XO field name.
- Do add an expansion of LWP in the description of 'lwp' and 'nlwps'.
- Add 'tid' as an alias for the 'lwp' field.

Reviewed by:    imp, kib (older version)
MFC after:      1 week
Differential Revision:  https://reviews.freebsd.org/D14021
DeltaFile
+5-9bin/ps/ps.1
+2-1bin/ps/keyword.c
+7-102 files

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