* buildsym.c (subfile_stack): Move here from buildsym.h.

	* buildsym.c (subfile_stack): Move here from buildsym.h.
	(pending_macros): Ditto.
	(get_macro_table): New function.
	(buildsym_init): Initialize subfile_stack.
	* coffread.c (type_vector,type_vector_length): Moved here from
	buildsym.h.
	(INITIAL_TYPE_VECTOR_LENGTH): Ditto.
	(coff_symtab_read): Use it.
	* dbxread.c (read_ofile_symtab): Delete init of subfile_stack.
	* dwarf2read.c (macro_start_file): Replace uses of pending_macros
	with call to get_macro_table.
	* stabsread.c (type_vector,type_vector_length): Moved here from
	buildsym.h.
	(INITIAL_TYPE_VECTOR_LENGTH): Ditto.
	* buildsym.h (get_macro_table): Declare.