[8u76] Request for approval to backport JDK-8145466: javac: No line numbers in compilation error

[Srikanth]

Hello !

Please approve the 8u76 backport of the fix made for JDK-8145466.

JDK9 ticket: https://bugs.openjdk.java.net/browse/JDK-8145466
8u76 ticket: https://bugs.openjdk.java.net/browse/JDK-8146533

JDK9 change set: 
http://hg.openjdk.java.net/jdk9/dev/langtools/rev/bdbad16dd9ac

Unfortunately, this change set does not mechanically apply as is
after path shuffling. However, manual application does not call
for any new changes.

All relevant tests are green.

8u76 specific code review is complete and is green:
     - http://cr.openjdk.java.net/~sadayapalam/JDK-8146533/webrev.00/
     - 
http://mail.openjdk.java.net/pipermail/compiler-dev/2016-January/009894.html

Thanks in advance,
Srikanth