Continuation lines may use short form (with space instead of message
number), but this should not be done when previous line is final.

Thanks to Kenth Eriksson for the bugreport and analysis.

Several new configure command variants:

configure undo - undo last reconfiguration
configure timeout - configure with scheduled undo if not confirmed in timeout
configure confirm - confirm last configuration
configure check - just parse and validate config file

Also fixes some minor bugs in include.

Thanks Kelly Cochran for suggestion and draft patch.

(Andreas)

by `debug commands <level>' in the configuration. Level 0 means
no tracing, 1 means connections only, 2 includes all commands.

outputs. It took a whole evening to hunt them down, but now the CLI seems
to work fine.

Now I run three BGP connections with several thousand routes!

and other non-portable functions on all systems.

deferred CLI command handlers to store their temporary data in the CLI
parsing pool.

`show protocols <name>'.

we want to allow filter and similar complex constructs to be used in commands
and we should avoid code duplication), only with CLI_MARKER token prepended
before the whole input.

Defined macro CF_CLI(cmd, args, help) for defining CLI commands in .Y files.
The first argument specifies the command itself, the remaining two arguments
are copied to the help file (er, will be copied after the help file starts
to exist). This macro automatically creates a skeleton rule for the command,
you only need to append arguments as in:

	CF_CLI(STEAL MONEY, <$>, [[Steal <$> US dollars or equivalent in any other currency]]): NUM {
		cli_msg(0, "%d$ stolen", $3);
	} ;

Also don't forget to reset lexer state between inputs.