* Fixes issue #856: "echo cancel" chekbox dont work reported and patched by Dmitry A. Bakshaev/dab18.
  * Other recent changes in earlier versions:
  * - Commit from translate.sip-communicator.org by user fliker09.: 912 of 912 messages translated (0 fuzzy).
  * - Fix SRV resolving for udp services (a problem where services with only udp SRV cannot connect). Fix sending unregister on shutting down, unregister is now not run in separate thread.
  * - Commit from translate.sip-communicator.org by user fliker09.: 912 of 912 messages translated (0 fuzzy).
  * - Patch provided by Purvesh Sahoo, fixing redundant code in replacement implementations + removed replacement blue borders
  * - Patch provided by Adam Netocny, adding the possibility to runtime change frame colors and icons.
  * - Patch provided by Adam Netocny improving skin management process (work in progress).
  * - Patch provided by Adam Netocny improving skin management process (work in progress).
  * - Fix sip provider status when connection failed(a problem where when sip PP goes in connection failed the UI is still showing it as online).
  * - Update util bundle to include some extra packages in order to help dns lib to extend its search for dns servers.
  * - Update the gui for avatar choosing, add some javadocs.
  * - Fixes drag component in contact list (including disappearing name or icon, text or image cutting, etc.).
  * - Order sip-communicator.properties alphabetically.
  * - Resolved duplicate import of json library. Fixed smiley source dependency to ui implementation. Fixed ReplacementService bundled in each implementation. 
  * - Attempt to fix start of SIP Communicator on Windows x64. As jsmooth cannot create a 64-bit wrapper, the 32-bit ones looks for a JVM in registry under the key "HKEY_LOCAL_MACHINE/SOFTWARE/Wow6432Node/JavaSoft/Java Runtime Environment" but the real 64-bit JVM is under "HKEY_LOCAL_MACHINE/SOFTWARE/JavaSoft/Java Runtime Environment". So we force JVM search first in "\\Program Files\Java\\jre6". Fix also updater download link for the Windows x64 version.
  * - Update dns resolution for sip addresses when connecting, added and the initial address as backup (the way we were connecting before introducing the reconnection mechanism for ipv6 and ipv4 services).
  * - Fix NPE when there are no SRV records for domain.
  * - Fixing jabber login to some services.
  * - Tries to remove slickless.jar and slick-runner.jar from the Debian package because 'There's no need for them to be deployed on user workstations.'
  * - Adds javadocs, fixes warnings.
  * - - Fixes incorrect association of user-specific data with the meta contact list. - Adds javadocs, fixes warnings.
  * - Add javadoc, fix warnings and typos.
  * - Add XMPP content-add and content-remove support.
  * - Remove the bundle audionotifier because its functionality has already been replaced by the bundle neomedia.
  * - Fix hold/unhold media issue in XMPP. Send UDP hole punch packet after SDP.
  * - - Fixes call recording-related issues reported off-list by Emil Ivov. - Adds javadocs, fixes warnings.
  * - Fix mute and holding one2one call and local sound levels. Fix adding unnecessary AudioLevelEffect in one2one call.