Binary package “libprefork-perl” in ubuntu precise

Module loading for forking or non-forking processes in Perl

 The prefork pragma is intended to allow module writers to optimise module
 loading for both scenarios with as little additional code as possible.
 .
 prefork.pm is intended to serve as a central and optional marshalling point
 for state detection (are we running in compile-time or run-time mode) and to
 act as a relatively light-weight module loader.