cache: create and use a RecipeInfo class
This class holds the particular pieces of information about a recipe which are
needed for runqueue to do its job.
By using it, I think we improve code clarity, reduce method sizes, reduce
overuse of primitive types, and prepare for parallel parsing. In addition,
this ditches the leaky abstraction whereby bb.cache attempted to hide the
difference between cached data and a full recipe parse. This was a remnant
from the way things used to be done, and the code using it had to know the
difference anyway. If we choose to reimplement caching of the full recipes,
we can do it in bb.parse, in a completely transparent way.
(Bitbake rev:
992cc252452221f5f23575e50eb67528b2838fdb)
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
