Fix errors reported by builder

core/sets/sets-docs.factor

@@ -28,7 +28,7 @@ HELP: adjoin
 { $description "Removes all elements equal to " { $snippet "elt" } ", and adds " { $snippet "elt" } " at the end of the sequence." }
 { $examples
     { $example
-        "USING: namespaces prettyprint sequences ;"
+        "USING: namespaces prettyprint sets ;"
         "V{ \"beans\" \"salsa\" \"cheese\" } \"v\" set"
         "\"nachos\" \"v\" get adjoin"
         "\"salsa\" \"v\" get adjoin"

extra/html/components/components-tests.factor

@@ -1,7 +1,7 @@
 IN: html.components.tests
 USING: tools.test kernel io.streams.string
 io.streams.null accessors inspector html.streams
-html.components ;
+html.components namespaces ;
 
 [ ] [ blank-values ] unit-test
 

extra/tangle/html/html-tests.factor

@@ -1,4 +1,4 @@
-USING: html kernel semantic-db tangle.html tools.test ;
+USING: kernel semantic-db tangle.html tools.test ;
 IN: tangle.html.tests
 
 [ "test" ] [ "test" >html ] unit-test

extra/trees/splay/splay-tests.factor

@@ -1,7 +1,7 @@
 ! Copyright (c) 2005 Mackenzie Straight.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel tools.test trees.splay math namespaces assocs
-sequences random ;
+sequences random sets ;
 IN: trees.splay.tests
 
 : randomize-numeric-splay-tree ( splay-tree -- )