PR gdb/9873:

	PR gdb/9873:
	* dwarf2read.c (dwarf_decode_macros): New variable `at_commandline'.
	Move the variable `macinfo_type' out of the loop.  Create a new
	processing pass before the current one to pre-create `current_file'.
	New complaint on misplaced zero/non-zero definitions/includes.
	Skip first DW_MACINFO_start_file with `at_commandline' set.