stat: Update manual and help to add latency-stats option

Author: ikegami-t

HOWTO

@@ -299,6 +299,10 @@ Command line options
 	Use the directory specified by `path` for generated state files instead
 	of the current working directory.
 
+.. option:: --latency-stats=nr
+
+	Change default latency stats number.
+
 Any parameters following the options will be assumed to be job files, unless
 they match a job file parameter. Multiple job files can be listed and each job
 file will be regarded as a separate group. Fio will :option:`stonewall`

fio.1

@@ -176,6 +176,9 @@ Set this \fIcommand\fR as remote trigger.
 .BI \-\-aux\-path \fR=\fPpath
 Use the directory specified by \fIpath\fP for generated state files instead
 of the current working directory.
+.TP
+.BI \-\-latency\-stats \fR=\fPnr
+Change default latency stats number.
 .SH "JOB FILE FORMAT"
 Any parameters following the options will be assumed to be job files, unless
 they match a job file parameter. Multiple job files can be listed and each job