re PR fortran/88678 (Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with...

re PR fortran/88678 (Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465)

2019-02-03  Uroš Bizjak  <ubizjak@gmail.com>

	PR libfortran/88678
	Revert:
	2016-11-16  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	PR libfortran/78314
	* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.

2019-02-03  Uroš Bizjak  <ubizjak@gmail.com>

	PR libfortran/88678
	* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
	exception flags before changing trap mode.  Optimize to call
	feenableexcept and fedisableexcept only once.

From-SVN: r268493