miscellaneous: clean up trailing whitespace throughout

The entire tree's polluted with inappropriate trailing
whitespace. This commit rids our environment of all of
those useless keystrokes. Unfortunately, it sure ain't
a permanent solution and requires every contributor to
instruct their editor(s) to prevent or eliminate them.

Plus it's strongly recommended we all insert something
like what's shown below to our '.gitconfig' file so as
to provide at least some warnings when we try to apply
any patches (git am) that do contain the #@!%& things!

References(s):
~/.gitconfig excerpt ---------------------------------
[core]
  whitespace = trailing-space, space-before-tab, blank-at-eof
[apply]
  whitespace = warn
--------------------------------- ~/.gitconfig excerpt

Signed-off-by: Jim Warner <james.warner@comcast.net>

ps/ps.1

@@ -804,13 +804,13 @@ if the parent process exits.
 If the length of the username is greater than the length of the display
 column, the numeric user ID is displayed instead.
 .PP
-Commands options such as 
+Commands options such as
 .B ps \-aux
 are not recommended as it is a confusion of two different standards.
 According to the POSIX and UNIX standards, the above command asks to
 display all processes with a TTY (generally the commands users are
 running) plus all processes owned by a user named "x".  If that user
-doesn't exist, then 
+doesn't exist, then
 .B ps
 will assume you really meant "\fBps\fR \fIaux\fR".
 .SH "PROCESS FLAGS"