base.bbclass: add from 554c892

Signed-off-by: Christopher Larson <kergoth@gmail.com>
base.bbclass: fix nondeterministic pkgconfig order

The PACKAGECONFIG flags were iterated over using dict.items(), but this
returns the items in an undefined order. As this order determines the
EXTRA_OECONF append order, we can get EXTRA_OECONF which are functionally
equivalent, but whose contents differ, resulting in not using shared state
archives we should be using.

JIRA: MEIP-165, SB-1462

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Merge pull request #47 from MentorEmbedded/pkgconfig-sstate-reuse-fix

Fix non-deterministic application of PACKAGECONFIG