RFR: [8218152] javac fails and exits with no error if a bad annotation processor is on the classpath

[Steve Groeger]

Hi all, 

The following issue [1] has been raised and the associated webrev [2] has 
been approved and the code merged into jdk/jdk [3]
I am now requesting this fix to be back-ported to jdk8u, jdk11u and 
jdk12u. 
The patch imports and works correctly on jdk8u and jdk12u but not quite on 
jdk8u due to difference in the test framework.
I have created a separate webrev for the jdk8u changes [4].
I am therefore requesting someone to review these changes and to sponsor 
these updates to jdk8u, jdk11u and jdk12u.

[1] https://bugs.openjdk.java.net/browse/JDK-8218152
[2] http://cr.openjdk.java.net/~sgroeger/8218152/jdk/webrev.04/
[3] http://hg.openjdk.java.net/jdk/jdk/rev/d9208a660094
[4] http://cr.openjdk.java.net/~sgroeger/8218152/jdk8u/webrev.04/

Thanks
Steve Groeger
IBM Runtime Technologies
Hursley, Winchester
Tel: (44) 1962 816911  Mobex: 279990  Mobile: 07718 517 129
Fax (44) 1962 816800
Lotus Notes: Steve Groeger/UK/IBM
Internet: groeges at uk.ibm.com

Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 
741598. 
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU