Some runtime linker bugs

[Serg Kruglov]

Sorry, I in prev. post mistake 
Correct patch is:
in function rtems_rtl_rap_load_symbols
have:
free (obj->global_table);
obj->global_table = NULL;
obj->global_syms = 0;
obj->global_size = 0;
rtems_rtl_set_error (EINVAL,
                     "duplicate global symbol: %s", rap->strtab + name);

should be:
rtems_rtl_set_error (EINVAL,
                     "duplicate global symbol: %s", rap->strtab + name);

free (obj->global_table);
obj->global_table = NULL;
obj->global_syms = 0;
obj->global_size = 0;

As after free (obj->global_table) value rap->strtab  is incorrected.

 
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