[Mesa-dev] [PATCH] Initial support for EXT_external_objects v2

[Andres Rodriguez]

This series is an initial step towards the implementation of
EXT_external_objects. It implements the functionality under
EXT_memory_object and EXT_memory_object_fd. 

This updated version of the series has the following changes:

 * Re-worked UUIDs to be provided by the gallium driver
 * Use a PIPE_CAP to gate the exposure of the extension
 * Add a comment for the non-dedicated memobj path
 * Fixed radeonsi and radv producing different driver UUIDs

Regards,
Andres