Update to 1.6.2.16:

The release of Asterisk 1.6.2.16 resolves several issues reported by the
community and would have not been possible without your participation.
Thank you!

The following is a sample of the issues resolved in this release:

* Fix cache of device state changes for multiple servers.
  (Closes issue #18284, #18280. Reported, tested by klaus3000. Patched, tested
  by russellb)

* Resolve issue where channel redirect function (CLI or AMI) hangs up the call
  instead of redirecting the call.
  (Closes issue #18171. Reported by: SantaFox)
  (Closes issue #18185. Reported by: kwemheuer)
  (Closes issue #18211. Reported by: zahir_koradia)
  (Closes issue #18230. Reported by: vmarrone)
  (Closes issue #18299. Reported by: mbrevda)
  (Closes issue #18322. Reported by: nerbos)

* Linux and *BSD disagree on the elements within the ucred structure. Detect
  which one is in use on the system.
  (Closes issue #18384. Reported, patched, tested by bjm, tilghman)

* app_followme: Don't create a Local channel if the target extension does not
  exist.
  (Closes issue #18126. Reported, patched by junky)

* Revert code that changed SSRC for DTMF.
  (Closes issue #17404, #18189, #18352. Reported by sdolloff, marcbou. rsw686.
  Tested by cmbaker82)

* Resolve issue where REGISTER request with a Call-ID matching an existing
  transaction is received it was possible that the REGISTER request would
  overwrite the initreq of the private structure.
  (Closes issue #18051. Reported by eeman. Patched, tested by twilson)

For a full list of changes in this release, please see the ChangeLog:

http://downloads.asterisk.org/pub/telephony/asterisk/ChangeLog-1.6.2.16

(jnemeth)