PR 78796 Modify testcases due to gfc_trans_string_copy change

As r244011 had to be reverted, this change adds back the testcase
changes that are needed due to r244003.

2017-01-04  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/78534
	PR fortran/78976
	* gfortran.dg/dependency_49.f90: Change scan-tree-dump-times
	due to gfc_trans_string_copy change to avoid -Wstringop-overflow.
	* gfortran.dg/transfer_intrinsic_1.f90: Change
	scan-tree-dump-times due to gfc_trans_string_copy change to
	avoid -Wstringop-overflow.

From-SVN: r244048