Merged requested to merge 1626-qopenglwidget into develop
QOpenGLWidget introduced in Qt 5.4.
The old QGLWidget is obsolete in Qt 5.
After this patch the performance of image browsing in Monteverdi on my machine is increased dramatically. I can browse an image smoothly while it was very slow before.
Please see the Qt Documentation for QOpenGLWidget for details on the differences between the two.
Closes #1626 (closed). Probably closes #1796 (closed).
The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.
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git diff develop... -U0 --no-color | clang-format-diff.py -p1 -ion latest changes and commit