Merge branch 'release-5.4' of https://git.orfeo-toolbox.org/git/otb into release-5.4

Copyright/GLFWCopyright.txt

Modules/Visualization/Ice/src/otbStandardShader.cxx

SuperBuild/CMake/External_fftw.cmake

SuperBuild/CMake/External_gdal.cmake

SuperBuild/CMake/External_geotiff.cmake

SuperBuild/CMake/External_opencv.cmake

SuperBuild/CMake/External_ossim.cmake

SuperBuild/CMake/External_otb.cmake

SuperBuild/CMake/External_proj.cmake

SuperBuild/CMake/External_qt4.cmake

SuperBuild/CMake/PackageHelper.cmake

SuperBuild/CMake/Package_Macro.cmake

SuperBuild/CMake/SuperBuild_Macro.cmake

SuperBuild/CMake/patch.cmake

SuperBuild/Copyright/ExpatCopyright.txt

SuperBuild/Copyright/FFTWCopyright.txt

SuperBuild/Copyright/FTL.TXT

SuperBuild/Copyright/FreeTypeCopyright.txt

SuperBuild/Copyright/GPLv2.TXT

SuperBuild/Copyright/GPLv3.TXT