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Re: testsuite fixes for small doubles

The fp-int-convert-long-double test does this:

  static volatile signed long long ivin, ivout;
  static volatile long double fv1, fv2;
  ivin = ((signed long long) (((unsigned long long) ~(unsigned long long) 0) >> 1));
  fv1 =  ((signed long long) (((unsigned long long) ~(unsigned long long) 0) >> 1));
  fv2 = ivin;
  ivout = fv2;

When sizeof(long double) <= sizeof(long long), it cannot store that
~0 value in a long double.
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