Listing the "Blender Foundation" as copyright holder implied the Blender
Foundation holds copyright to files which may include work from many
developers.
While keeping copyright on headers makes sense for isolated libraries,
Blender's own code may be refactored or moved between files in a way
that makes the per file copyright holders less meaningful.
Copyright references to the "Blender Foundation" have been replaced with
"Blender Authors", with the exception of `./extern/` since these this
contains libraries which are more isolated, any changed to license
headers there can be handled on a case-by-case basis.
Some directories in `./intern/` have also been excluded:
- `./intern/cycles/` it's own `AUTHORS` file is planned.
- `./intern/opensubdiv/`.
An "AUTHORS" file has been added, using the chromium projects authors
file as a template.
Design task: #110784
Ref !110783.
With the introduction of metal and vulkan we use a different
GPU backend selection which broke the dialog box for unsupported
platforms.
Blender asserted and segfaulted before the dialog was being shown
to the user.
This patch solves this by introducing a dummy GPU backend in case no
GPU backend was supported by OpenGL, Metal and Vulkan Backend.
It also adds the showMessageBox to GHOST_SystemCocoa.
Related to #110335
Pull Request: https://projects.blender.org/blender/blender/pulls/110919
