RFR: 8141211: Convert TraceExceptions to Unified Logging

[Rachel Protacio]

Hello,

Please review my conversion of -XX:+TraceExceptions to 
-Xlog:exceptions=info. The existing (product) flag is aliased to the 
logging flag at the info level.

If you have any questions on the alias table (in the arguments.cpp and 
.hpp files), Max will chime in as he is the one who implemented that 
portion.

Open webrev: http://cr.openjdk.java.net/~rprotacio/8141211/
Bug: https://bugs.openjdk.java.net/browse/JDK-8141211

Testing: jtreg, JPRT, jck vm tests, refworkload performance tests, rbt 
quick & non-colo tests

Thank you!
Rachel