Merge branch 'release-5.6' of https://git.orfeo-toolbox.org/git/otb into release-5.6

CMake/FindGBenchmark.cmake

CMakeLists.txt

Modules/ThirdParty/Boost/otb-module-init.cmake

Modules/ThirdParty/OssimPlugins/src/CMakeLists.txt

...ThirdParty/OssimPlugins/src/ossim/ossimSentinel1Model.cpp

Modules/ThirdParty/OssimPlugins/test/CMakeLists.txt

.../ThirdParty/OssimPlugins/test/ossimSentinel1ModelTest.cpp

SuperBuild/CMake/External_boost.cmake

SuperBuild/CMake/External_qt4.cmake

SuperBuild/Packaging/CMakeLists.txt

SuperBuild/Packaging/PMacros.cmake

SuperBuild/Packaging/PackageHelper.cmake

SuperBuild/patches/BOOST/1.54.0/boost/cstdint.hpp

...ST/1.54.0/boost/date_time/local_time/custom_time_zone.hpp

...ild/patches/BOOST/1.54.0/boost/log/utility/once_block.hpp

...hes/BOOST/1.54.0/boost/thread/win32/thread_primitives.hpp

...uild/patches/BOOST/1.54.0/libs/coroutine/build/Jamfile.v2

SuperBuild/patches/QT4/configure_qt4.sh.in

SuperBuild/patches/QT4/qt4-1-skip-qtnetwork-module-all.diff

SuperBuild/patches/QT4/qt4-2-fix_rpath-macx.diff