Made actionscript code generation ByteArray-aware.

(ByteArray is a special class for dealing with bytes. It does not extend
the normal Array).


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4452 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/tools/service_as.tmpl

@@ -1,5 +1,6 @@
 package $package {
 
+import flash.utils.ByteArray;
 #foreach ($import in $imports)
 import $import;
 #end