Specifying explicit engine name is not honored now
because backened engine name depends on the system.
We prefer to guide accelerator rather than engine.
It has been discussed on the ML (thread: "[RFC] rename efl_self") and
IRC, and has been decided we should rename it to this in order to avoid
confusion with the already established meaning of self which is very
similar to what we were using it for, but didn't have complete overlap.
Kudos to Marcel Hollerbach for initiating the discussion and
fighting for it until he convinced a significant mass. :)
This commit breaks API, and depending on compiler potentially ABI.
@feature
It supports the same syntax as the config value, but
overrides it. This provides a more convenient way to select
the acceleration for a single window.
Its get() value should be what was effective when the window was
created. So it can depend on the config or a previous call
to set().
@feature
Hermet Park
Tom Hacohen
Amitesh Singh
Jean-Philippe Andre
Cedric BAIL