Load_path

`sig
val add_dir : string -> unit
val remove_dir : string -> unit
val reset : unit -> unit
val init : string list -> unit
val get_paths : unit -> string list
val find : string -> string
val find_uncap : string -> string
module Dir :
sig
type t
val create : string -> Load_path.Dir.t
val path : Load_path.Dir.t -> string
val files : Load_path.Dir.t -> string list
end
val add : Load_path.Dir.t -> unit
val get : unit -> Load_path.Dir.t list
end`