More fixes for processing corrupt files.

More fixes for processing corrupt files.

	PR binutils/17512
	* coffcode.h (coff_set_alignment_hook): Warn if the file lies
	about the number of relocations it contains.
	(coff_sort_func_alent): Return 0 if the pointers are NULL.
	(coff_slurp_line_table): Add more range checks.  Do not free new
	tables created when sorting line numbers.
	* peXXigen.c (pe_print_idata): Add range checks.
	(pe_print_edata): Likewise.
	(rsrc_print_resource_entries): Likewise.  Avoid printing control
	characters.  Terminate priniting if corruption is detected.
	(rsrc_print_resource_directory): Terminate printing if an unknown
	directory type is encountered.
	(pe_print_debugdata): Fix off-by-one error.
	(rsrc_count_entries): Add range checking.
	(rsrc_parse_entry): Likewise.