RFR: 8152436: Add a test to verify that the root logger correctly reports the caller's information

[Daniel Fuchs]

Hi,

Please find below a new test that verifies that JDK-8152389 does
not occur in JDK 9.

bug:
8152436: Add a test to verify that the root logger correctly
          reports the caller's information
https://bugs.openjdk.java.net/browse/JDK-8152436

Issue being verified by the test:
https://bugs.openjdk.java.net/browse/JDK-8152389

Webrev (test only):
http://cr.openjdk.java.net/~dfuchs/webrev_8152436/webrev.00/

best regards,

-- daniel