RFR (8u): 8042660: vm/mlvm/anonloader/stress/byteMutation failed with: assert(index >=0 && index < _length) failed: symbol index overflow

[Poonam Bajaj Parhar]

Hello,

Please review these changes that backport the fix of  '8042660: 
vm/mlvm/anonloader/stress/byteMutation failed with: assert(index >=0 && 
index < _length) failed: symbol index overflow' to 8u.

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8042660
Webrev:http://cr.openjdk.java.net/~poonam/8042660/webrev.8u.00/
Testing:
- JPRT
- Tested the testcase BadNameAndType with the fastdebug build of the 
fixed 8u JDK.

Thanks,
Poonam