remove pragma GCC diagnostic warning

push/pop is only supported starting with GCC 4.6

Change-Id: I4c3f8c183ad7eb2be29934fab470c107b8407bc5
Reviewed-on: http://gerrit.aldebaran.lan/21974
Reviewed-by: cgestes <gestes@aldebaran-robotics.com>
Reviewed-by: sbarthelemy <sbarthelemy@aldebaran-robotics.com>
Tested-by: gerrit
log: fix help for --qi-log-context

Change-Id: Iea05aac7e081260a2abffd922c1d4bbe3da63635
Reviewed-on: http://gerrit.aldebaran.lan/22073
Reviewed-by: clemolgat <clemolgat@aldebaran-robotics.com>
Reviewed-by: cgestes <gestes@aldebaran-robotics.com>
Tested-by: cgestes <gestes@aldebaran-robotics.com>
qi::init: use ref for argc/argv

Change-Id: I000a1551dbc1d419e54abb8e88a481c6ad3c7ebc
Reviewed-on: http://gerrit.aldebaran.lan/22126
Reviewed-by: cgestes <gestes@aldebaran-robotics.com>
Tested-by: cgestes <gestes@aldebaran-robotics.com>