rename benchmark.struct to tools.time.struct since it is not a benchmark

extra/game/loop/loop.factor

@@ -3,7 +3,7 @@ USING: accessors timers alien.c-types calendar classes.struct
 continuations destructors fry kernel math math.order memory
 namespaces sequences specialized-vectors system
 tools.memory ui ui.gadgets.worlds vm vocabs.loader arrays
-benchmark.struct locals ;
+tools.time.struct locals ;
 IN: game.loop
 
 TUPLE: game-loop

extra/tools/time/struct/struct.factor

@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors alien.c-types classes.struct kernel memory
 system vm ;
-IN: benchmark.struct
+IN: tools.time.struct
 
 STRUCT: benchmark-data
     { time ulonglong }