module Zip_wrapper:wrapper for reading zipped filessig..end
during compile time this file or wrapper_disabled/Zip_wrapper is chosen,
depending on if the
camlzip library is installed or not.
if available, this module is chosen, which is just a wrapper to camlzip.
type in_file
type entry
val enabled : boolval open_in : string -> in_fileval find_entry : in_file -> string -> entryval read_entry : in_file -> entry -> string