[RFA/JDWP] Fix VMVirtualMachine.getAllClassMethods

[Kyle Galloway]

Currently, if the debugger requests the methods for a class that is part 
of the class libraries (or other compiled classes), the 
_Jv_FindInterpredClass call it makes returns null, this pointer is then 
dereferenced causing the communication thread to crash and the VM to 
stop responding to debugger commands.  This patch fixes this by using 
JVMTI to get the class methods, which will work in both cases.  This 
effectively makes the getAllClassMethods/getClassMethod pair work like 
the getFrames/getFrame pair with the single method being used as a 
factory to create objects for the other.

ChangeLog
2007-05-03  Kyle Galloway  <kgallowa@redhat.com>

    * gnu/classpath/jdwp/natVMVirtualMachine.cc (getClassMethod): Change 
to use JVMTI.

Questions/comments/concerns?

Thanks,
Kyle
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