These are variables that some Python recipes are starting to use, but
there is no documentation for them currently in the reference manual.
(From yocto-docs rev: 78cde86cc31f238b8b31569ac9df2eeb15ef5e33)
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>