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wayland-info: Add support for linux_dmabuf version 4

Link Mauve requested to merge linkmauve/wayland-utils:dmabuf-v4 into main

This version changes how formats and modifiers are send to the client, which now has to mmap() a file descriptor to get the list of known formats, and then receives the preferred formats in tranches, from best to worst.

We keep the deprecated version 3 handling, for legacy compositors.

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