* gfortran.dg/f2003_io_4.f03, gfortran.dg/read_size_noadvance.f90,

	* gfortran.dg/f2003_io_4.f03, gfortran.dg/read_size_noadvance.f90,
	gfortran.dg/namelist_39.f90, gfortran.dg/read_repeat.f90,
	gfortran.dg/fmt_exhaust.f90, gfortran.dg/fseek.f90,
	gfortran.dg/fmt_t_7.f, gfortran.dg/read_x_past.f,
	gfortran.dg/read_bad_advance.f90, gfortran.dg/backslash_3.f,
	gfortran.dg/namelist_56.f90, gfortran.dg/list_read_5.f90,
	gfortran.dg/fmt_cache_1.f, gfortran.dg/fmt_t_4.f90: Gate test on
	effective_target fd_truncate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149524 138bc75d-0d04-0410-961f-82ee72b054a4