* symtab.h (enum address_class): Add LOC_UNRESOLVED for
a location whose address has to be resolved via the minimal
symbol table.
* buildsym.c (finish_block), findvar.c (symbol_read_needs_frame,
read_var_value), printcmd.c (address_info),
symmisc.c (print_symbol, print_partial_symbol): Handle
LOC_UNRESOLVED.
* stabsread.c (scan_file_globals): Change unresolved LOC_STATIC
symbols to LOC_UNRESOLVED. Remove rt_common_objfile lookup
kludge, global common symbols are now handled by LOC_UNRESOLVED.
(scan_file_globals_1): Move code back to scan_file_globals,
delete.