csqrt tests XPASSing

[Andrew Pinski]

> 
> Hi,
> 
> I'm beginning to see the csqrt_2.f testcases XPASSing on some of my  
> systems, as they get up-to-date glibc. Maybe now we could remove the  
> "xfail *-*-linux-gnu" directive?

Only 2.4 and above glibc work.  There are a lot of older machines which
have 2.3.5 and before.

-- Pinski