egcs-1.1 in SCOV5 changes memcpy() into buggy SCO bcopy()

[Robert Lipe]

Jeffrey A Law wrote:
> 
> 
>   In message < 19980917001647.E1141@dgii.com >you write:
>   > > When a C program uses memcpy(), the assembly generated calls bcopy().
>   > 
>   > I never noticed that before.   I was pretty mystified.   I ran the same
>   > compiler source on a Linux system and generated more obvious output.
> Deep dark corners of the compiler you never wanted to know about.
> 
> Defining TARGET_MEM_FUNCTIONS is definitely the right think to do if
> all the sco5 versions have them.

Eric didn't respond to the request asking if it was better or worse.  
So I took Jeff's comment as permission/encouragment to commit this.

Done.

RJL