[mythtv] OSX Compile fails on has_altivec ld error

[Nigel Pearson]

> ld: Undefined symbols:
> _has_altivec


This was easier to fix than I thought. Try -r14870

--
Nigel Pearson, nigel at ind.tansu.com.au|"Look at this!
Telstra Net. Eng., Sydney, Australia | Do you think I put this in
Office: 9202 3900    Fax:  9261 3912 |  to get better reception?"
Mobile: 0408 664435  Home: 9792 6998 | Batty - Fern Gully