lib/berkeley-db-1.xx: Switch to "embedded" branch.

pfalcon · pfalcon · commit 2ec943284a1d · 2016-07-31T00:36:38.000+03:00
It allows to access files via a virtual method tables and thus can integrate
with MicroPython's stream objects.
diff --git a/lib/berkeley-db-1.xx b/lib/berkeley-db-1.xx
@@ -1 +1 @@
-Subproject commit 7b31cae3c0892a7fca2089cb0354a4920c98c413
+Subproject commit 2328ab24e8e538b1cf443dad6b4a635d6cf6620f
