* dwarfread.c (isreg, optimized_out, offreg, basereg): Move

	* dwarfread.c (isreg, optimized_out, offreg, basereg): Move
	global variables into the struct dieinfo structure.
	(locval): Pass pointer to a dieinfo struct rather than a
	pointer to the raw location information.  Change prototype.
	Set isreg, optimized_out, offreg and basereg as appropriate.
	(struct_type): Call locval with dieinfo struct pointer.
	(new_symbol): Ditto.
	(new_symbol): Call locval and save location before testing
	the values of the new dieinfo struct flags, set by locval.