New gdb 31 & 64 bit patches for S/390

[Andrew Cagney]

> Yes, it is.
> 
> AFAIR: It has 32 bits but the most significant bit is used to signal
> that the hardware is using the "new" mode which has 31 bit instead of
> the "old" mode with 24 (???) bits. For Linux/S390 only the 31 bit
> mode is used.
> 

Ah, thanks.  The change is in.

	Andrew