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>

pgrep.1

@@ -49,7 +49,7 @@ only.)
 \fB\-c\fR, \fB\-\-count\fR
 Suppress normal output; instead print a count of matching processes.  When
 count does not match anything, e.g. returns zero, the command will return
-non-zero value. 
+non-zero value.
 .TP
 \fB\-d\fR, \fB\-\-delimiter\fR \fIdelimiter\fP
 Sets the string used to delimit each process ID in the output (by default a
@@ -116,8 +116,8 @@ Only match processes whose real user ID is listed.  Either the numerical or
 symbolical value may be used.
 .TP
 \fB\-v\fR, \fB\-\-inverse\fR\fR
-Negates the matching.  This option is usually used in 
-.BR pgrep 's 
+Negates the matching.  This option is usually used in
+.BR pgrep 's
 context.  In
 .BR pkill 's
 context the short option is disabled to avoid accidental usage of the option.