RFA: fix GDB casts when pointers are not addresses

[Andrew Cagney]

> - the integer produced is the byte address in the code segment (so for
>   the D10V, this would be the pointer's value times four), or
> 
> - the integer produced is the 16-bit pointer value reinterpreted as a
>   16-bit integer --- no adjustment takes place.
> 
> Currently, GDB implements the former, while GCC implements the former.
> This patch changes GDB to match GCC.
> 
> 
> Um, ....

Jim,  I take it you ment:

GDB implements the former, while GCC implements the latter.

	Andrew