* Add implementation of an ordered Properties class.
  * Other recent changes in earlier versions:
  * - If an update link is provided by provisioning configuration, use it instead of default ones.
  * - Fixes warnings and javadocs.
  * - Create video calls with a MediaDevice in OperationSetDesktopSharingServer.
  * - Fixes warnings, TODOs, javadocs, formatting.
  * - Fixes warnings, javadocs, formatting.
  * - Fixes authentication window size problem, when an error is shown.
  * - Comment on the previous fix added.
  * - Save end reason code for calls if any, and don't show call history records which are answered elsewhere as missed.
  * - Implement new OperationSetDesktopStreaming interface to prepare integration of the desktop streaming/sharing GUI.
  * - Commit from translate.sip-communicator.org by user ratelists.: 910 of 910 messages translated (0 fuzzy).
  * - Add DHCP retransmissions. Remove provisioning username/password from configuration/credentials storage when we receive an HTTP unauthorized (error 401).
  * - Set default sip registration time to 600. Enable by default xcap server when adding existing sip2sip accounts. Enable setting sip account avatar through xcap. 
  * - If HTTP authentication is needed with provisioning, it will use the same credentials as the provisioning server.
  * - Commit from translate.sip-communicator.org by user mandre.: 498 of 910 messages translated (44 fuzzy).
  * - Commit from translate.sip-communicator.org by user mandre.: 60 of 910 messages translated (0 fuzzy).
  * - Pack the authentication window just before showing it.
  * - Hide the new account menu if the SHOW_ACCOUNT_CONFIG is set to false.
  * - Added a property allowing to hide option menus and buttons and account configuration form.
  * - Choose 224 as DHCP option code for provisioning
  * - Some code formatting.
  * - Introducing the provisioning form.
  * - Adds lib/installer-exclude/dhcp4java-1.00.jar to the classpaths of Eclipse and NetBeans to fix compile-time errors.
  * - Initial commit to support provisioning. It provides the DHCP provisioning discovery method, the provisioning URL can also be retrieved from configuration.
  * - Prepare the provisioning bundle for the configuration form.
  * - Moved the CertificateVerificationService to its own bundle. Moved SIPCommHTMLEditorKit and SIPCommHTMLEditorPane to the util package.
  * - Moved the CertificateVerificationService to its own bundle. Moved SIPCommHTMLEditorKit and SIPCommHTMLEditorPane to the util package.
  * - Fix tests.
  * - Intorduce issue#862 SIP call markes as missed though answered elsewhere (rfc3326).
  * - Moves the authentication window to the util package and removes any dependency to the protocol service and security authority.
  * - Desktop sharing support for SIP and XMPP. Note that GUI is not ready yet to propose this feature to the users.
  * - Try to fix unit test run.