add enum to default build

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3954 d0543943-73ff-0310-b7d9-9358b9ac24b2

modules.conf.in

@@ -5,6 +5,7 @@ applications/mod_commands
 applications/mod_conference
 applications/mod_dptools
 applications/mod_echo
+applications/mod_enum
 #applications/mod_ivrtest
 #applications/mod_park
 applications/mod_playback