The package REINITIALIZERS allows the user to specify code that is
executed on every start of scsh, provided a heap image containing the
reinitializer is used.

Procedures:

(make-reinitializer thunk) -> reinitializer

Creates a reinitializer that runs THUNK on every start of the system.
The returned reinitializer should be saved in a global variable to
ensure that it is reachable for the garbage collector and saved in the
heap image.