Make SPOON an alias for FORK-THREAD.

doc/scsh-manual/threads.tex

@@ -230,6 +230,10 @@ is similar to what happens at process forking.
   to another.
 \end{itemize}
 
+\defun{spoon} {thunk} \undefined
+
+This is just an alias for \ex{fork-thread} suggested by Alan Bawden.
+
 For user and group identities arbitrary changing is not possible.
 Therefore they remain global process state: If a thread changes one of
 these values, all other threads see the new value. Consequently, scsh

scheme/big/thread-fluid.scm

@@ -69,3 +69,5 @@
 
 (define (fork-thread thunk . rest)
   (apply spawn (preserve-thread-fluids thunk) rest))
+
+(define spoon fork-thread)

scheme/more-interfaces.scm

@@ -352,7 +352,8 @@
 	  set-thread-fluid!
 	  make-preserved-thread-fluid
 	  preserve-thread-fluids
-	  fork-thread))
+	  fork-thread
+          spoon))
 
 (define-interface search-trees-interface
   (export make-search-tree