Need help with change

[Coleen Phillimore]

I found during code review comment editing for my change that removes 
signers and protection domain from the InstanceKlass, that JVMTI code 
seems to have some sort of call back and knowledge of these fields in 
instanceKlass.

          </constant>
          <constant id="JVMTI_REFERENCE_SIGNERS" num="5">
            Reference from a class to its signers array.
          </constant>
          <constant id="JVMTI_REFERENCE_PROTECTION_DOMAIN" num="6">
            Reference from a class to its protection domain.


If I remove these, will it cause incompatibilities?   It's used during 
jvmtiTagMap.cpp (whatever that's doing).

Thanks,
Coleen