Release of XStudio 1.6sp3

XStudio maintenance release 1.6sp3 has been delivered.

It fixes a couple of minor issues (mostly only when used with an Oracle database):

   * Additional protection while printing the custom fields (in the launchers)
   * Additional protection on changes information length <= 255 chars
   * Bug-fixes:
     - Localization of certain terms not found in not-English languages
     - Files in the doc tree are never detected as locked (Oracle only)
     - Improved Spanish localization
     - Some large text fields does not support > 4000 characters (Oracle only)
       * defect: defect_description, step_to_reproduce, fix_description
       * test: test_description, test_prerequisites, additional_info
       * test case: testcase_steps, testcase_description, additional_info
       * requirement: requirement_description
       * specification: specification_description
     - Couldn't change the value of the defect custom fields (Oracle only)
     - Do not escape CLOBS when inserting them (Oracle only)
     - Workaround to avoid having a " " canonical path