RFR(L): 8218628: Add detailed message to NullPointerException describing what is null.

[Lindenmaier, Goetz]

Hi Andrew, 

> Ok. However, if you have the appropriate method bytecodes and the BCI at
> which the exception occurred then I'm not sure why you would need ASM.
I implemented it in C++ at first. I was asked to investigate an implementation 
in Java by the reviewers.
 
Thanks!
  Goetz

> Also, it was not strictly correct when I said all that is retained is
> the method bytecodes. Exception tables, line number tables and local var
> name & type tables are also retained.
> 
> regards,
> 
> 
> Andrew Dinn
> -----------
> Senior Principal Software Engineer
> Red Hat UK Ltd
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