Fixes stleary#187 -0 now returns as a double.

Author: John J. Aylward

JSONObject.java

@@ -30,7 +30,8 @@ of this software and associated documentation files (the "Software"), to deal
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
-import java.math.*;
+import java.math.BigDecimal;
+import java.math.BigInteger;
 import java.util.Collection;
 import java.util.Enumeration;
 import java.util.HashMap;
@@ -1500,19 +1501,19 @@ public static Object stringToValue(String string) {
         if ((b >= '0' && b <= '9') || b == '-') {
             try {
                 if (string.indexOf('.') > -1 || string.indexOf('e') > -1
-                        || string.indexOf('E') > -1) {
+                        || string.indexOf('E') > -1
+                        || "0".equals(string.substring(1))) {
                     d = Double.valueOf(string);
                     if (!d.isInfinite() && !d.isNaN()) {
                         return d;
                     }
                 } else {
                     Long myLong = new Long(string);
                     if (string.equals(myLong.toString())) {
-                        if (myLong == myLong.intValue()) {
-                            return myLong.intValue();
-                        } else {
-                            return myLong;
+                        if (myLong.longValue() == myLong.intValue()) {
+                            return Integer.valueOf(myLong.intValue());
                         }
+                        return myLong;
                     }
                 }
             } catch (Exception ignore) {