Phillip Webb 28dad44e2d Be defensive about JUL calls from JAR Handler
Update nested JAR support to only obtain JUL loggers when absolutely
necessary and to defensively deal with failures.

Prior to this commit it was not possible to override
`java.util.logging.manager` to use a nested JAR as the logger
implementation.

Fixes gh-9848
2017-07-24 12:54:24 -07:00
..
2017-06-08 12:47:16 +00:00