[2138] bind10-gude.xml update and comment update

doc/guide/bind10-guide.xml

@@ -1407,21 +1407,6 @@ can use various data source backends.
               </simpara>
             </listitem>
           </varlistentry>
-
-          <varlistentry>
-            <term>statistics-interval</term>
-            <listitem>
-              <simpara>
-      <varname>statistics-interval</varname> is the timer interval
-      in seconds for <command>b10-auth</command> to share its
-      statistics information to
-      <citerefentry><refentrytitle>b10-stats</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
-      Statistics updates can be disabled by setting this to 0.
-      The default is 60.
-              </simpara>
-            </listitem>
-          </varlistentry>
-
         </variablelist>
 
       </para>
@@ -1457,10 +1442,11 @@ can use various data source backends.
             <term>sendstats</term>
             <listitem>
               <simpara>
-      <command>sendstats</command> tells <command>b10-auth</command>
+      <command>getstats</command> requests <command>b10-auth</command>
       to send its statistics data to
-      <citerefentry><refentrytitle>b10-stats</refentrytitle><manvolnum>8</manvolnum></citerefentry>
-      immediately.
+      <citerefentry><refentrytitle>b10-stats</refentrytitle>
+      <manvolnum>8</manvolnum></citerefentry>
+      as a response of the command.
               </simpara>
             </listitem>
           </varlistentry>

src/bin/auth/command.cc

@@ -105,7 +105,8 @@ public:
                                  isc::data::ConstElementPtr args) = 0;
 };
 
-// Handle the "shutdown" command.
+// Handle the "shutdown" command. An optional parameter "pid" is used to
+// see if it is really for our instance.
 class ShutdownCommand : public AuthCommand {
 public:
     virtual ConstElementPtr exec(AuthSrv& server,