RFR (XS) 8025088 - Java debugger handling of CONSTANT_MethodHandleInError

[Ioi Lam]

Please review a small fix:

http://cr.openjdk.java.net/~iklam/8025088/met_hand_in_err1/

Bug: Missing cases for JVM_CONSTANT_MethodHandleInError cause crash
      if debugger steps into error-tagged method handle

     https://bugs.openjdk.java.net/browse/JDK-8025088

Summary of fix:

     Added handling of CONSTANT_MethodHandleInError and
     CONSTANT_MethodTypeInError in ConstantPool::cpool_entry_size()
     and ConstantPool::copy_cpool_bytes(). These functions are called
     by the debug agent when you single step inside Java code.

     There are other places where MethodHandleInError/MethodTypeInError
     are not handled properly. These are unrelated to JVMTI, so I have
     filed a separate bug JDK-8025185.

Tests:

     JPRT
     UTE (vm.runtime.testlist nsk.sajdi.testlist vm.tmtools.testlist)

Thanks
- Ioi