[PATCH] Fix gfortran.dg/dtio_13.f90 failure on at least FreeBSD

[Steve Kargl]

The attached patch fixes the failure of gfortran.dg/dtio_13.f90
on at least FreeBSD.  This test has been failing for a very long
time.  In resolve_transfer, gfortran needs to check for a BT_CLASS,
but failed to to do.  The patch allows one to remove a TODO in
dt90_13.f90 and more important the dg-error test for a spurious
error.  OK to commit?

2017-10-30  Steven G. Kargl   <kargl@gcc.gnu.org>

	* resolve.c (resolve_transfer): Set derived to correct symbol for 
	BT_CLASS.

2017-10-30  Steven G. Kargl   <kargl@gcc.gnu.org>

	* gfortran.dg/dtio_13.f90: Remove TODO comment and dg-error test.

-- 
Steve
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