Copy Java's valueOf factory method for primitive wrapper classes.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4217 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/Byte.as

@@ -8,6 +8,11 @@ public class Byte
 {
     public var value :int;
 
+    public static function valueOf (val :int) :Byte
+    {
+        return new Byte(val);
+    }
+
     public function Byte (value :int)
     {
         this.value = value;

src/as/com/threerings/util/Float.as

@@ -8,6 +8,11 @@ public class Float
 {
     public var value :Number;
 
+    public static function valueOf (val :Number) :Float
+    {
+        return new Float(val);
+    }
+
     public function Float (value :Number)
     {
         this.value = value;

src/as/com/threerings/util/Integer.as

@@ -13,6 +13,11 @@ public class Integer
 {
     public var value :int;
 
+    public static function valueOf (val :int) :Integer
+    {
+        return new Integer(val);
+    }
+
     public function Integer (value :int)
     {
         this.value = value;

src/as/com/threerings/util/Long.as

@@ -9,6 +9,11 @@ public class Long
     public var high :int;
     public var low :int;
 
+    public static function valueOf (low :int, high :int = 0) :Long
+    {
+        return new Long(low, high);
+    }
+
     public function Long (low :int, high :int = 0)
     {
         this.low = low;

src/as/com/threerings/util/Short.as

@@ -8,6 +8,11 @@ public class Short
 {
     public var value :int;
 
+    public static function valueOf (val :int) :Short
+    {
+        return new Short(val);
+    }
+
     public function Short (value :int)
     {
         this.value = value;