* Fix file drag n' drop on Linux.
  * Use certificate service when accessing https xcap addresses.
  * Other recent changes in earlier versions:
  * build.3281
  * - Print call statistics in the log file.
  * build.3280
  * - In case we fail to resolve backup resolver address, we take the IP address of the default backup resolver.
  * build.3279
  * - Update smack's XMPPConnection class to use InetAddress.getHostAddress() instead of InetAddress.getHostName() to avoid sending PTR DNS request.
  * build.3278
  * - Make sure we don't skip setting show application property when hide/show application.
  * - Add some debug logs in DNS parallel resolver.
  * build.3277
  * - Make sure we use directsound devices under windows if they are not set as default one.
  * build.3276
  * - Check default settings for property.
  * build.3275
  * - Fixes dialpad dialog location. Make the single window toolbar visible only when a chat is opened.
  * build.3274
  * - Fix a possible ui block.
  * - Fixes wrong location of the call window. Do not add the close video button in desktop sharing mode.
  * - Add early message processors for all incoming sip messages.
  * - Removes unused border in the account status panel on the top of the contact list.
  * - Early process messages in separate method.
  * - X509TrustManager's getAcceptedIssuers() method should return " a non-null (possibly empty) array of acceptable CA issuer certificates".
  * build.3273
  * - Makes the ProtoProvider always respond with at least a 501 Not implemented to requests we don't support. Reported by John Ervin 
  * build.3272
  * - Makes the ProtoProvider always respond with at least a 501 Not implemented to requests we don't support. 
  * build.3271
  * - Fixes remaining message notification icon for a contact with no "active" chats.
  * build.3270
  * - Hide the close local video button during a drag operation.
  * build.3269
  * - Cosmetic changes.
  * build.3268
  * - Check a logging property in configuration and if missing get it from default settings.
  * - If there's no remote video we limit the local video drag to the video container dimensions.
  * build.3267
  * - Fixes local video minimum and maximum coordinates on move.
  * build.3266
  * - Fixes NullPointerException in single window mode.
  * build.3265
  * - Removes an ancient doc file that is today extremely obsolete
  * - removes legacy file dating from the old java.net and obsoleted by the move to kenai
  * - Added the possibility to hide and move the local video. Enable video button added in full screen mode. Fixed problem with remaining avatar icon after a remote video was added (reported by Conrad Beckert on dev mailing list: "default avatar in rectangle on fullscreen video view").
  * build.3264
  * - Network utils listens for network changes and updates dns servers in our resolver.
  * build.3263
  * - Fix blocked call at incoming state whereas other peer is connected.
  * build.3262
  * - Fix a problem with not finished zip files on macosx. Adjust some text.