* Enables spell check plugin and adds some improvements provided by Purvesh Sahoo.
  * Other recent changes in earlier versions:
  * build.3597
  * - Addresses a possible deadlock in video calls.
  * build.3596
  * - Takes into account the configuration property net.java.sip.communicator.service.protocol.MIN_MEDIA_PORT_NUMBER for the purposes of ICE.
  * - Addresses a possible deadlock in video calls.
  * build.3595
  * - Updates msn library with latest fixes for login accounts with no contacts and fix a NPE in OIM.
  * build.3594
  * - Fixes the use of non predefined parameters in the provisioning uri. 
  * build.3593
  * - Fixes Jabber create account form.
  * build.3592
  * - Fixes the Windows setup to respect the user's choice about the target directory in which Jitsi is to be installed.
  * build.3591
  * - Fixes the Windows setup to respect the user's choice about the target directory in which Jitsi is to be installed.
  * build.3590
  * - Fixes possible deadlock in RTPConnectorUDPInputStream.
  * build.3589
  * - Fixes possible deadlock in RTPConnectorUDPInputStream.
  * build.3588
  * - Fixes possible deadlock in RTPConnectorUDPInputStream.
  * build.3587
  * - Fixes possible deadlock in RTPConnectorUDPInputStream.
  * build.3586
  * - If an XMPP logged peer supports Google's Jingle/ICE dialect, choose it by default for a call.
  * build.3585
  * - If an XMPP logged peer supports Google's Jingle/ICE dialect, choose it by default for a call.
  * build.3584
  * - Display the ZRTP mandatory algorithms in case no specific ZRTP configuration was saved
  * - Adds support for RTP over TCP and Google Talk's TCP/TURN-TCP/TURN-SSLTCP candidates.
  * - Fixes a bad instanceof check, reported by Werner Dittmann on mailing-list.
  * - Restores the create Jabber account form and fixes some related issues.
  * build.3583
  * - Moves ZRTP configurations panel in a "ZRTP Ninja" button thus making them available only for advanced users.
  * build.3582
  * - Provides some chat room fixes and improvements including the /me command and TAB key.
  * build.3581
  * - Makes sure that FMJ's JavaSoundCodec will not be utilized in the event that it appears on the classpath because it leads to a noticeable increase in the time taken to construct a filter graph.
  * build.3580
  * - Fixes a problem with hold and enabling audio if we were in mutually hold status and putting it locally off hold. Fixes possible NPE in QualityPreset.
  * build.3579
  * - Various chatroom improvements: fixes NPE and multi selection issue, fixes displaying and receiving messages from members with same username and different servers.
  * build.3578
  * - Fixes NPE when disconnects from jabber server. Fixes joining/creating chatrooms using google accounts. Fixes an error parsing protocols in result records from NAPTR query.