am b257c944: Report the cause of name lookup failures to Java land. The Java code already uses the exception thrown by getallbyname() as a chained exception.

Merge commit 'b257c944e15c5be46a69143603426c7ce137e6a3' into eclair-plus-aosp

* commit 'b257c944e15c5be46a69143603426c7ce137e6a3':
  Report the cause of name lookup failures to Java land. The Java code already