Add TODO comment regarding Thread Interruption handling
Uptake the latest changes from java-core and java-native library

* Uptake the latest changes from https://github.com/couchbase/couchbase-lite-java-core.
* Uptake https://github.com/couchbase/couchbase-lite-java-native/commit/215629304c7938bd04f17567081d83266fda4302 that has a fix for  https://github.com/couchbase/couchbase-lite-java-core/issues/135 issue.
Merge remote-tracking branch 'upstream/master'