Back out a threading change

library/compiler/compiler.factor

@@ -27,7 +27,7 @@ optimizer prettyprint sequences test threads words ;
 : compile-vocabs ( vocabs -- )
     [ words ] map concat
     dup [ f "no-effect" set-word-prop ] each
-    [ try-compile yield ] each ;
+    [ try-compile ] each ;
 
 : compile-all ( -- ) vocabs compile-vocabs ;
 

library/io/unix/io.factor

@@ -305,5 +305,4 @@ USE: io
         H{ } clone write-tasks set
         FD_SETSIZE <byte-array> write-fdset set
         0 1 <fd-stream> stdio set
-        [ idle-thread ] in-thread
     ] bind ;

library/threads.factor

@@ -48,4 +48,5 @@ namespaces queues sequences vectors ;
 
 : init-threads ( -- )
     <queue> \ run-queue set-global
-    V{ } clone \ sleep-queue set-global ;
+    V{ } clone \ sleep-queue set-global
+    [ idle-thread ] in-thread ;