* buildsym.c (finish_block_internal): New arg "expandable".

	* buildsym.c (finish_block_internal): New arg "expandable".
	All callers updated.
	(start_symtab): Move most contents to ...
	(restart_symtab): ... here.  New function.
	(reset_symtab_globals): New function.
	(end_symtab_1): Renamed from end_symtab.  New arg "expandable".
	Call reset_symtab_globals.
	(end_symtab, end_expandable_symtab): New functions.
	(set_missing_symtab, augment_type_symtab): New functions.
	* buildsym.h (end_expandable_symtab): Declare.
	(augment_type_symtab, restart_symtab): Declare.