[rfa:ppc64] Eliminate call_dummy_address

[Kevin Buettner]

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.

Kevin