[commit] Hack value's lval, regnum, address, internalvar, and frame_id fields

[Andrew Cagney]

Hello, this converts the remaining VALUE_ REGNUM ADDRESS INTERNALVAR and 
FRAME_ID maro's into functions.  For reasons noted in:

http://sources.redhat.com/ml/gdb/2005-02/msg00029.html
> However, for the VALUE fields that describe the actual location (i.e., PIECE) there's a problem - there are now N PIECEs. Initially I'll assume there's only one piece giving:
> 
> Old:	value->lval
> Hack:	value->contents->piece[0]->lval
> 
> 
> (the assume-one-piece methods will be DEPRECATED). Going forward the code can be updated to eliminate that assumption, instead iterating over multiple pieces.

I've called the wrapper functions deprecated_XXXX_hack (Hmm, I see one 
hack got duplicated) and just switched the macro's to use them.  Medium 
term neither the macros nor the functions have a future.

committed,
Andrew
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