- Add notes about voicemail depending on res_adsi

- Remove obsolete modules from modules.conf.sample
  (make install will warn if those exist on the machine)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@36979 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -25,6 +25,7 @@
  * \par See also
  * \arg \ref Config_vm
  * \ingroup applications
+ * \note This module requires res_adsi to load.
  */
 
 /*