changes to handling of "." and ".." when dotglob is enabled; other minor changes

parse.y

@@ -6771,6 +6771,7 @@ save_parser_state (ps)
 
   ps->input_line_terminator = shell_input_line_terminator;
   ps->eof_encountered = eof_encountered;
+  ps->eol_lookahead = eol_ungetc_lookahead;
 
   ps->prompt_string_pointer = prompt_string_pointer;
 
@@ -6836,6 +6837,7 @@ restore_parser_state (ps)
 
   shell_input_line_terminator = ps->input_line_terminator;
   eof_encountered = ps->eof_encountered;
+  eol_ungetc_lookahead = ps->eol_lookahead;
 
   prompt_string_pointer = ps->prompt_string_pointer;