patch ping for altivec.h and vmx tests

[Aldy Hernandez]

> exercising this functionality, and so it boggles the mind why you would
> approve these four patches without additional test cases.

Perhaps because Janis has never broken the tree, or introduced more
bugs than she fixed?

> >Argh... We could just remove these tests.  I really don't care for 
> >them.
> 
> As if not requiring new test cases was not bad enough...  I guess 
> AltiVec
> is your fiefdom, so knock yourself out.

These tests test printf/scanf functionality that was never accepted
into glibc.

Aldy