[rfa:ppc64] Eliminate call_dummy_address

[Andrew Cagney]

> On Aug 27,  4:14pm, Andrew Cagney wrote:
> 
> 
>> This patch does two things:
>> 
>> - It modifies "infcall.c" so that it converts the entry-point address 
>> into a code address (it might be a descriptor).
>> 
>> - since it's now redundant, for ppc64 GNU/Linux, it stops setting 
>> entry_point_address
>> 
>> Kevin, ppc64 part ok?  It doesn't immediatly affect test results as this 
>> GDB still requires a mod to relocate the entry point.
> 
> 
> Sounds reasonable.  Okay.

TKS, its in.  Now for the next one.

Andrew