add mod_dptools, for set variable and sleep from the dialplan

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@1864 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/freeswitch.xml

@@ -36,6 +36,7 @@
         <!-- Applications -->
         <load module="mod_bridgecall"/>
         <load module="mod_echo"/>
+        <load module="mod_dptools"/>
         <!-- <load module="mod_ivrtest"/> -->
         <load module="mod_playback"/>
         <load module="mod_commands"/>