Fix automatic reading of new chat messages in Skype 6.22.

Unfortunately, this will break support for older versions of Skype.
Re #4218.
skype: Hmm. It seems the child id isn't always 3, but so far, it always seems to be the last child.
2014.4jp public beta
work around ti34542
l10n interpolationFixes for ar:

From  svn revision 18357

Author:
Fatma Mehanna <fatma.mehanna@gmail.com>
l10n interpolationFixes for sv:

From  svn revision 18357

Author:
Niklas Johansson <sleeping.pillow@gmail.com>
l10n interpolationFixes for el:

From  svn revision 18357

Author:
Nikos Demetriou <nikosdemetriou@googlemail.com>
l10n interpolationFixes for ta:

From  svn revision 18357

Author:
Dinakar T.D. <td.dinkar@gmail.com>
l10n interpolationFixes for pl:

From  svn revision 18357

Author:
Grzegorz Zlotowicz <grzezlo@wp.pl>
l10n interpolationFixes for sk:

From  svn revision 18357

Author:
Ondrej Rosik <ondrej.rosik@gmail.com>
l10n interpolationFixes for sl:

From  svn revision 18357

Author:
Jozko Gregorc <jozko.gregorc@gmail.com>
l10n interpolationFixes for de:

From  svn revision 18358
l10n interpolationFixes for hu:

From  svn revision 18360
l10n interpolationFixes for sr:

From  svn revision 18365

Author:
Nikola Jovic <wwenikola123@gmail.com>
l10n interpolationFixes for ru:

From  svn revision 18365

Author:
Ruslan Kolodyazhni <eye0@rambler.ru>
Merge branch 'interpolationFixes' into rc

* interpolationFixes:
  l10n interpolationFixes for ru:
  l10n interpolationFixes for sr:
  l10n interpolationFixes for hu:
  l10n interpolationFixes for de:
  l10n interpolationFixes for sl:
  l10n interpolationFixes for sk:
  l10n interpolationFixes for pl:
  l10n interpolationFixes for ta:
  l10n interpolationFixes for el:
  l10n interpolationFixes for sv:
  l10n interpolationFixes for ar:
Merge commit 'fetch_head' into jp2014.4
merged t4218 from nvaccess, work around skype 6.22
2014.4jp