csqrt tests XPASSing

[FX Coudert]

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?

XPASS: gfortran.dg/csqrt_2.f  -O0  execution test
XPASS: gfortran.dg/csqrt_2.f  -O1  execution test
XPASS: gfortran.dg/csqrt_2.f  -O2  execution test
XPASS: gfortran.dg/csqrt_2.f  -O3 -fomit-frame-pointer  execution test
XPASS: gfortran.dg/csqrt_2.f  -O3 -fomit-frame-pointer -funroll- 
loops  execution test
XPASS: gfortran.dg/csqrt_2.f  -O3 -fomit-frame-pointer -funroll-all- 
loops -finline-functions  execution test
XPASS: gfortran.dg/csqrt_2.f  -O3 -g  execution test
XPASS: gfortran.dg/csqrt_2.f  -Os  execution test

FX