move null streams to core and make them not depend on io.styles and io.timeouts, initialize the std streams to null-streams on windows in win32 mode

basis/io/backend/windows/nt/nt.factor

@@ -120,6 +120,9 @@ M: winnt (wait-to-read) ( port -- )
         tri
     ] with-destructors ;
 
-M: winnt (init-stdio) init-c-stdio ;
+: console-app? ( -- ? ) GetConsoleWindow ;
+
+M: winnt (init-stdio)
+    console-app? [ f f f f ] [ init-c-stdio t ] if ;
 
 winnt set-io-backend

basis/io/timeouts/timeouts.factor

@@ -1,7 +1,7 @@
 ! Copyright (C) 2008 Slava Pestov, Doug Coleman
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel calendar alarms io io.encodings accessors
-namespaces fry ;
+namespaces fry io.streams.null ;
 IN: io.timeouts
 
 GENERIC: timeout ( obj -- dt/f )
@@ -27,3 +27,5 @@ GENERIC: cancel-operation ( obj -- )
 : timeouts ( dt -- )
     [ input-stream get set-timeout ]
     [ output-stream get set-timeout ] bi ;
+
+M: null-stream set-timeout 2drop ;

core/io/backend/backend.factor

@@ -1,7 +1,7 @@
 ! Copyright (C) 2007, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: init kernel system namespaces io io.encodings
-io.encodings.utf8 init assocs splitting alien ;
+io.encodings.utf8 init assocs splitting alien io.streams.null ;
 IN: io.backend
 
 SYMBOL: io-backend
@@ -12,13 +12,22 @@ io-backend global [ c-io-backend or ] change-at
 
 HOOK: init-io io-backend ( -- )
 
-HOOK: (init-stdio) io-backend ( -- stdin stdout stderr )
+HOOK: (init-stdio) io-backend ( -- stdin stdout stderr ? )
+
+: set-stdio ( input-handle output-handle error-handle -- )
+    [ input-stream set-global ]
+    [ output-stream set-global ]
+    [ error-stream set-global ] tri* ;
 
 : init-stdio ( -- )
-    (init-stdio)
-    [ utf8 <decoder> input-stream set-global ]
-    [ utf8 <encoder> output-stream set-global ]
-    [ utf8 <encoder> error-stream set-global ] tri* ;
+    (init-stdio) [
+        [ utf8 <decoder> ]
+        [ utf8 <encoder> ]
+        [ utf8 <encoder> ] tri*
+    ] [
+        3drop
+        null-reader null-writer null-writer
+    ] if set-stdio ;
 
 HOOK: io-multiplex io-backend ( us -- )
 

core/io/streams/c/c.factor

@@ -65,7 +65,7 @@ M: c-io-backend init-io ;
     stdout-handle <c-writer>
     stderr-handle <c-writer> ;
 
-M: c-io-backend (init-stdio) init-c-stdio ;
+M: c-io-backend (init-stdio) init-c-stdio t ;
 
 M: c-io-backend io-multiplex 60 60 * 1000 * 1000 * or (sleep) ;
 

core/io/streams/null/null.factor

@@ -1,13 +1,13 @@
 ! Copyright (C) 2007, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel io io.timeouts io.styles destructors ;
+USING: kernel io destructors io.streams.plain ;
 IN: io.streams.null
 
 SINGLETONS: null-reader null-writer ;
 UNION: null-stream null-reader null-writer ;
+INSTANCE: null-writer plain-writer
 
 M: null-stream dispose drop ;
-M: null-stream set-timeout 2drop ;
 
 M: null-reader stream-readln drop f ;
 M: null-reader stream-read1 drop f ;
@@ -16,16 +16,10 @@ M: null-reader stream-read 2drop f ;
 
 M: null-writer stream-write1 2drop ;
 M: null-writer stream-write 2drop ;
-M: null-writer stream-nl drop ;
 M: null-writer stream-flush drop ;
-M: null-writer stream-format 3drop ;
-M: null-writer make-span-stream nip ;
-M: null-writer make-block-stream nip ;
-M: null-writer make-cell-stream nip ;
-M: null-writer stream-write-table 3drop ;
 
 : with-null-reader ( quot -- )
     null-reader swap with-input-stream* ; inline
 
 : with-null-writer ( quot -- )
-    null-writer swap with-output-stream* ; inline
+    null-writer swap with-output-stream* ; inline