* normal/command.c (grub_command_init): Remove the title command.
* normal/lexer.c (grub_script_yylex): Renamed from this...
(grub_script_yylex2): ... to this.
(grub_script_yylex): New function. Temporary
introduced to filter some tokens.
(grub_script_yyerror): Print a newline.
* normal/main.c (read_config_file): Output information about the
lines that contain errors. Wait for a key after all lines have
been processed. Don't return an empty menu.
* normal/parser.y (func_mem): Don't initialize.
(menu_entry): Likewise.
(err): New variable.
(script): Don't return anything when an error was encountered.
(ws, returns): Removed rules.
(argument): Disabled concatenated variable support.
(arguments): Remove explicit separators.
(grubcmd): Likewise.
(function): Likewise.
(menuentry): Likewise.
(if): Likewise.
(commands): Likewise. Add error handling.
* normal/script.c (grub_script_create_cmdline): If
`grub_script_parsed' is 0, assume the parser encountered an error.
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