Missing instruction in s/390 assembler.

[Nick Clifton]

Hi Martin,

> the s/390 assembler misses the lgh instruction. Simple problem, simple fix:
> 
> 2001-06-01  Martin Schwidefsky <schwidefsky@de.ibm.com>
> 
>      * s390-opc.c: Add lgh instruction.
>      * s390-opc.txt: Likewise.

Approved and applied.

Cheers
        Nick