update submodule

Hideki Itakura · Hideki Itakura · commit 2b6b65d01bc0 · 2015-05-27T12:02:10.000-07:00
diff --git a/libraries/couchbase-lite-java-core b/libraries/couchbase-lite-java-core
@@ -1 +1 @@
-Subproject commit c77fc15ae482ea94aa0f0e9e0fc023596d506a7f
+Subproject commit 539bd8bd9ad9fb597fa9683f6d5ad26c9639e812
