Add to targ_extra_libpath for mips*-*-linux-*

[Eric Christopher]

>
> 2007-02-19  Joseph Myers  <joseph@codesourcery.com>
>
> 	* configure.tgt (mips64*el-*-linux-*, mips64*-*-linux-*,
> 	mips*el-*-linux-*, mips*-*-linux-*): Set
> 	targ_extra_libpath=$targ_extra_emuls.

Sure. How'd you test it?

-eric