Release of XStudio 1.6sp2

In case you missed it, XStudio 1.6sp2 has been released on http://www.xqual.com

Change log:

   * New certificate (valid until 2015)
   * Read-only fields more readable
   * Bug-fixes:
     - Merge rules updated (not executed status never taken in consideration)
     - Couldn't execute XAgent with an Oracle database (Exception while
       retrieving the schedule candidates)
     - XAgent don't execute the tests!  
     - Exception possibly thrown if requirements retrieved from JIRA while:
       . generating some specifications from requirements
       . generating some tests from requirements (if specs are disabled)
       . selecting requirements associated with a specification
       . selecting requirements associated with a test (if specs are disabled)
     - Scheduling of sessions not working with Oracle DB
     - xls2xml_reqs_specs_tests.xls does not support UTF-8 characters