repmgrd: daemonize process by default

It's hard to imagine a use case where this isn't desirable, but
in case, for whatever reason, the user does not wish to daemonize the
process, the command line option "--daemonize=false" can be provided.

Implements GitHub #458.

doc/appendix-release-notes.sgml

@@ -37,6 +37,7 @@
       <title>repmgrd enhancements</title>
       <para>
         <itemizedlist>
+
           <listitem>
             <para>
               <application>repmgrd</application>: create a PID file by default
@@ -44,6 +45,16 @@
             </para>
           </listitem>
 
+          <listitem>
+            <para>
+              <application>repmgrd</application>: daemonize process by default.
+			  In case, for whatever reason, the user does not wish to daemonize the
+			  process, provice <option>--daemonize=false</option>.
+			  (GitHub #458).
+            </para>
+          </listitem>
+
+
         </itemizedlist>
       </para>
     </sect2>

doc/repmgrd-configuration.sgml

@@ -159,7 +159,7 @@
     <para>
       <application>repmgrd</application> can be started manually like this:
       <programlisting>
-        repmgrd -f /etc/repmgr.conf --pid-file /tmp/repmgrd.pid --daemonize</programlisting>
+        repmgrd -f /etc/repmgr.conf --pid-file /tmp/repmgrd.pid</programlisting>
       and stopped with <command>kill `cat /tmp/repmgrd.pid`</command>. Adjust paths as appropriate.
     </para>
     <para>