[PATCH] S390: Fix fp comparison not raising FE_INVALID.

[Stefan Liebler]

Hi,

As gcc is using unordered comparison instructions which do not
raise invalid exception if any operand is quiet NAN,
FIX_COMPARE_INVALID is defined to 1.
Thus iseqsig is calling feraiseexcept as workaround.

ChangeLog:

	* sysdeps/s390/fpu/fix-fp-int-compare-invalid.h: New file.
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