[Tarantool-patches] [PATCH] box: make box.execute() immutable

[Alexander Turenko]

>  function box.execute(...)
> -    load_cfg()
> +    --
> +    -- Calling box.execute before explicitly configuring box led to
> +    -- automatic box.cfg invocation nonetheless. Following explicit
> +    -- attempts to configure box led to its reconfiguratin and as a 
> +    -- result - to an error when trying to use execute method again. 
> +    -- The check makes sure box.execute is an immutable function.
> +    --

I would describe all this hell with registering lbox_execute as
box.execute, moving it to box_cfg_guard_whitelist, adding this
box.execute function, then replacing back with lbox_execute at
load_cfg().

This description would make clear why everything is fine if we just call
box.execute(), but extra flag is necessary if a user saved box.execute
before first box.execute() or box.cfg() call.