re PR fortran/16919 (ICE with derived type and array constructor)

re PR fortran/16919 (ICE with derived type and array constructor)

	PR fortran/16919
	* trans-array.c (gfc_add_loop_ss_code): Handle GFC_SS_COMPONENT.
	(gfc_conv_array_index_offset): Allow "temporary" with nonzero delta.
	(gfc_trans_preloop_setup, gfc_trans_scalarized_loop_boundary):
	Handle GFC_SS_COMPONENT.
	(gfc_conv_ss_startstride): Ditto.  Set ss->shape.
	(gfc_conv_loop_setup): Tweak commends. Remove dead code.
	Use ss->shape.
	(gfc_conv_array_initializer): Call specific initializer routines.
	* trans-expr.c (gfc_trans_structure_assign): New function.
	(gfc_trans_subarray_assign): New function.
	(gfc_trans_subcomponent_assign): New fucntion
	(gfc_conv_structure): Use them.
	* trans.h (gfc_ss_type): Add GFC_SS_COMPONENT.
	(gfc_ss): Add shape.
testsuite/
	* gfortran.dg/der_array_1.f90: New test.

From-SVN: r85730