CHANGE: have system/ports/output to be same as system/ports/input (instead of none)

related to:
Oldes/Rebol-issues#2472
Oldes/Rebol-issues#2468

Author: Oldes

src/mezz/sys-ports.reb

@@ -358,7 +358,8 @@ init-schemes: func [
 	]
 
 	system/ports/system:   open [scheme: 'system]
-	system/ports/input:    open [scheme: 'console]
+	system/ports/input:
+	system/ports/output:   open [scheme: 'console]
 	system/ports/callback: open [scheme: 'callback]
 
 	init-schemes: 'done ; only once

src/tests/units/call-test.r3

@@ -78,8 +78,7 @@ rebol-cmd: func[cmd][
 ===start-group=== "Error pipe"
 	--test-- "User controlled error output"
 		;@@ https://github.com/Oldes/Rebol-issues/issues/2468
-		; the port should be renamed from `input` to `io` or `console`, because it is not just an input!!
-		--assert 0 = rebol-cmd {--do "prin 1 modify system/ports/input 'error on prin 2 modify system/ports/input 'error off prin 3"}
+		--assert 0 = rebol-cmd {--do "prin 1 modify system/ports/output 'error on prin 2 modify system/ports/output 'error off prin 3"}
 		--assert "13" = out-buffer
 		--assert "2"  = err-buffer