Splits the parsing cache to maintain one cache per multiconfig instead
of one global cache. This is necessary now that the files and appends
can vary for each multiconfig. A bb.cache.MulticonfigCache
dictionary-like proxy object is created instead of a single
bb.cache.Cache object. This object will create and properly initialize
bb.cache.Cache object for each multiconfig, and each of these caches has
a dedicated cache file with a name based on the multiconfig.
(Bitbake rev: 5272f2489586479880ae8d046dfcdbe0963ee5bb)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>