* mdebugread.c (parse_type): Do not complain for types with

	* mdebugread.c (parse_type):  Do not complain for types with
	an `indexNil' aux index, these are simply undefined types.
	Remove indexNil check from caller of parse_type.
	* mdebugread.c (parse_partial_symbols):  Do not enter
	stGlobal, scCommon symbols into the minimal symbol table, their
	value is the size of the common, not its address.
	Handle scInit, scFini, scPData and scXData sections.
	Use minimal symbol type mst_file_* for stLabel symbols, instead of
	mst_*.
	Enter stProc symbols into the global_psymbols list once, not into
	the static_psymbols_list.
	Get rid of dummy psymtab if it is empty, to allow proper detection
	of stripped executables.
	* mdebugread.c (cross_ref):  Allow cross references to Fortran
	common blocks.