Re-committed this change (got lost in a merge after conflict):

*	* boot-9.scm (top-repl): Use (ice-9 debug) (ice-9 debugger) (ice-9
	session) (ice-9 threads) (ice-9 regex) from guile-user only if
	top-repl is called.  This makes startup time for scripts 30% of
	what it was before...  Removed redundant code for loading of
	readline.

ice-9/boot-9.scm

@@ -3045,51 +3045,7 @@
 ;;;
 (define exit-hook (make-hook))
 
-;;; Load readline code into root module if readline primitives are available.
-;;;
-;;; Ideally, we wouldn't do this until we were sure we were actually
-;;; going to enter the repl, but autoloading individual functions is
-;;; clumsy at the moment.
-(if (and (memq 'readline *features*)
-	 (isatty? (current-input-port)))
-    (begin
-      (define-module (guile) :use-module (ice-9 readline))
-      (define-module (guile-user) :use-module (ice-9 readline))))
-
-
-;;; {Load debug extension code into user module if debug extensions present.}
-;;;
-;;; *fixme* This is a temporary solution.
-;;;
-
-(if (memq 'debug-extensions *features*)
-    (define-module (guile-user) :use-module (ice-9 debug)))
-
-
-;;; {Load session support into user module if present.}
-;;;
-;;; *fixme* This is a temporary solution.
-;;;
-
-(if (%search-load-path "ice-9/session.scm")
-    (define-module (guile-user) :use-module (ice-9 session)))
-
-;;; {Load thread code into user module if threads are present.}
-;;;
-;;; *fixme* This is a temporary solution.
-;;;
-
-(if (memq 'threads *features*)
-    (define-module (guile-user) :use-module (ice-9 threads)))
-
-
-;;; {Load regexp code if regexp primitives are available.}
-
-(if (memq 'regex *features*)
-    (define-module (guile-user) :use-module (ice-9 regex)))
-
 
 (define-module (guile))
 
 (append! %load-path (cons "." ()))
-