[8u76] Request for approval: 8138745: Implement ExitOnOutOfMemory and CrashOnOutOfMemory in HotSpot

[cheleswer sahu]

Hi!
May I please have approval to backport this fix from JDK9 to JDK8. I 
have built the JDK8, and tested already. As some of the API's are not 
available or have some different signature in JDK8, I have done some 
code changes to make the change-set appropriate for JDK8. As I do not 
have account for OPENJDK, Kevin walls will push this fix into JDK8 
repository.

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8138745
JDK9 changeset: 
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/cbc2d5fbdae1
Review thread: 
http://mail.openjdk.java.net/pipermail/serviceability-dev/2015-December/018356.html
Webrev Link: http://cr.openjdk.java.net/~dbuck/8138745_8u_01/ 
<http://cr.openjdk.java.net/%7Edbuck/8138745_8u_01/>

Regards,
Cheleswer