Get concurrency contrib code working with 0.80 changes.

contrib/concurrency/concurrency-examples.factor

@@ -23,8 +23,8 @@
 !
 ! Examples of using the concurrency library.
 IN: concurrency-examples
-USING: concurrency dlists errors gadgets-theme io kernel lists
-math namespaces opengl prettyprint sequences threads unparser ;
+USING: concurrency dlists errors gadgets-theme gadgets-panes io kernel lists
+math namespaces opengl prettyprint sequences threads ;
 
 : (logger) ( mailbox -- )
   #! Using the given mailbox, start a thread which

contrib/concurrency/concurrency.factor

@@ -24,7 +24,7 @@
 ! Concurrency library for Factor based on Erlang/Termite style
 ! concurrency.
 USING: kernel lists generic threads io namespaces errors words 
-       math sequences hashtables unparser strings vectors dlists ;
+       math sequences hashtables strings vectors dlists ;
 IN: concurrency
 
 #! Debug

contrib/concurrency/load.factor

@@ -1,5 +1,4 @@
 USE: kernel
-USE: httpd
 USE: threads
 USE: prettyprint
 USE: errors
@@ -13,5 +12,3 @@ USE: parser
 : c "concurrency-tests.factor" run-file ;
 a
 b
-USE: concurrency
-USE: concurreny-examples