indications.conf: add stutter tone; end properly

* If the "stutter" (voicemail indication) tone is indeed a stutter tone,
  and it ends with a constant tone, make sure that it is the dial tone.
  This was done for India (in), Mexico (mx) and the Philippines (ph).
* If no "stutter" tone exists for a country, provide one. This was done for
  Spain (es), Malaysia (my) and Venezuela (ve).

Review: https://reviewboard.asterisk.org/r/3158/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@407622 f38db490-d61c-443f-a65b-d21fe96a405b