This is mostly cleanup of comments with a few changes to also remove some compile time warnings.

• JSONObject
  • increment I replaced the autoboxing calls with explicit accessors and also prevented runtime casting by using the proper long/float/double literals.
  • Null I added a hashcode function that explicitly returns 0 everytime, the same as most hash functions when handling null : return someField == null ? 0 : someField.hashCode();
  • Added a put function for float... for some reason we have code that handles floats in multiple places, but no way to directly add them into the JSONObject. Previously these would get converted to double
  • Modified the put(literalNumber) methods to use the valueOf static instead of always creating new instances.
• JSONPointer
  • Updated class references to be fully qualified with this.
  • Updated constructor parameters to be final.
• XML
  • toString(String, String) updated parameters to be final

Let me know if I should roll any of the changes back and just keep the comment fixes.