Ian gave some off-list feedback for this list.
This series has this code flow: The driver.context_init calls
_mesa_initialize_context which in turn calls back into the driver
(driver.InitializeVersionFeatures).
But, Ian suggested that instead I pull the dispatch table init
functions out of _mesa_
Within _mesa_initialize_context the call to _mesa_create_exec_table
now depends on ctx->Version being set. (For GLES3 support.)
This series adds a driver callback function that allows each driver
to enable features that are significant for computing to version.
Now _mesa_initialize_context will:
