Make the new attr/prop changes pass the test suite (in Webkit). There are still errors in IE.

+ Added hooks for selected, checked, readonly, disabled to removeAttr if set to falsey

+ Removed all attrs from attrFix, these aren't needed for setAttribute

+ If prop is used for class, do we want a propFix for class?

  - We could just assume the user should know to use className with prop.  I've done the latter for now.

+ Created tests for $.fn.prop and $.fn.removeProp

  - Actually all I did was change broken attr tests to prop where it made sense.

src/manipulation.js

@@ -377,7 +377,7 @@ function cloneCopyEvent( src, dest ) {
 	}
 }
 
-function cloneFixAttributes(src, dest) {
+function cloneFixAttributes( src, dest ) {
 	// We do not need to do anything for non-Elements
 	if ( dest.nodeType !== 1 ) {
 		return;