* cris/sim-if.c: Include errno.h.

	* cris/sim-if.c: Include errno.h.
	(cris_start_address, cris_program_offset): New variables.
	(OPTION_CRIS_PROGRAM_OFFSET, OPTION_CRIS_STARTADDR): New option
	enums.
	(cris_options): New options --cris-program-offset and
	--cris-start-address.
	(cris_option_handler): Handle new options.
	(cris_program_offset_write, cris_set_section_offset_iterator)
	(cris_offset_sections, cris_offset_sections): New functions.
	(sim_load): Use cris_program_offset_write as function argument to
	cris_load_elf_file, not sim_write.
	(struct offsetinfo): New struct.
	(cris_handle_interpreter): Fix typo in comment.
	(sim_open): Call cris_offset_sections as soon as the bfd of the
	infile is available.  Gate bfd validity checks on abfd non-NULL.
	(sim_create_inferior): Let cris_start_address when != -1 override
	other start-address choices.