* normal/execute.c (grub_script_execute_cmd): Change the return
type to `grub_err_t'. Correctly return the error.
(grub_script_execute_cmdline): In case a command line is not a
command or a function, try to interpret it as an assignment.
* include/grub/normal.h: Include <grub/script.h>.
(grub_command_list): Removed struct.
(grub_command_list_t): Removed type.
(grub_menu_entry): Remove members `num' and `command_list'. Add
members `commands' and `sourcecode'.
* include/grub/script.h: Add inclusion guards.
(grub_script_cmd_menuentry): New struct.
(grub_script_execute_menuentry): New prototype.
(grub_script_lexer_record_start): Likewise.
(grub_script_lexer_record_stop): Likewise.
* normal/execute.c (grub_script_execute_menuentry): New function.
* normal/lexer.c (record, recording, recordpos, recordlen): New
variables.
(grub_script_lexer_record_start): New function.
(grub_script_lexer_record_stop): Likewise.
(recordchar): Likewise.
(nextchar): Likewise.
(grub_script_yylex): Use `nextchar' to fetch new characters. Use
2048 as the buffer size. Add the tokens `menuentry' and `@'.
* normal/main.c: Include <grub/parser.h> and <grub/script.h>
(current_menu): New variable.
(free_menu): Mainly rewritten.
(grub_normal_menu_addentry): New function.
(read_config_file): Rewritten.
* normal/menu.c (run_menu_entry): Mainly rewritten.
* normal/menu_entry.c (make_screen): Rewritten te code to insert
the menu entry.
(run): Mainly rewritten.
* normal/parser.y (menu_entry): New variable.
(GRUB_PARSER_TOKEN_MENUENTRY): New token.
(menuentry): New rule.
(command): Add `menuentry'.
(if_statement): Allow additional returns before `fi'.
* normal/script.c (grub_script_create_cmdmenu): New function.
