build: Enables all warnings and the GNU dialect of C++11 for GNU and clang compilers.
build: Enables all warnings and the GNU dialect of C++11 for GNU and clang compilers.

Change-Id: Ie35840324f0206a8c1517683fa88330f287559bf
Reviewed-on: http://gerrit.aldebaran.lan/95600
Reviewed-by: jlamotte <70353e7b0c7d18b7fc75605daf0ccba69fcd3222@aldebaran.com>
Reviewed-by: philippe.martin <a3db8b74c3cf86a5cf091dca4e2125b498be933d@softbankrobotics.com>
Reviewed-by: jmonnon <8898eaf233516e520f996a244ca8a12d20f948b1@aldebaran.com>
Tested-by: philippe.martin <a3db8b74c3cf86a5cf091dca4e2125b498be933d@softbankrobotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi