Merge pull request processing-js#27 from Pomax/t1889

Fixed ArrayList constructor to accept 'anything that has .toArray' instead of just ArrayList

Author: jbuck

processing.js

@@ -471,7 +471,7 @@
     function ArrayList(a) {
       var array;
 
-      if (a instanceof ArrayList) {
+      if (a && a.toArray) {
         array = a.toArray();
       } else {
         array = [];

test/unit/arrayListFromSet.pde

@@ -0,0 +1,8 @@
+HashMap<String,String> map = new HashMap<String,String>();
+map.put("a","1");
+
+ArrayList<String> keys = new ArrayList(map.keySet());
+_checkEqual(keys.get(0), "a");
+
+ArrayList<String> vals = new ArrayList(map.values());
+_checkEqual(vals.get(0), "1");