Fix compilation of Qt Concurrent with gcc 4.3

GCC 4.3 had support for decltype but not the new function syntax (which
we call "auto function" for short). That meant the code did not compile.

qtconcurrentrun.h:105: error: expected initializer before ‘->’ token

Task-number: QTBUG-28984
Change-Id: I792276ec59c4f6e73f6137c517636e70c71ed849
(cherry-picked from Qt 5 commit 0c4f6c6ea9415bcc5fde3e34bf909f43a9c6483c)
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
SSL docs: Be more explicit about the threats of ignoring SSL errors

... because almost everybody gets it wrong almost every time.

(cherry picked from commit eaa18f306341818165c2ee4fc22750da04d5e45e)

Change-Id: I3ca1dfe9723d4d29339c2c0a1ebe421f5929c760
Reviewed-by: Richard J. Moore <rich@kde.org>