Merge branch 'master' of github.com:jquery/jquery

diff --combined src/core.js
index 158f479,f6a07eb..2c2b746
--- 1/src/core.js
--- 2/src/core.js
+++ b/src/core.js
@@@ -69,10 -69,7 +69,10 @@@ var jQuery = function( selector, contex
        push = Array.prototype.push,
        slice = Array.prototype.slice,
        trim = String.prototype.trim,
 -      indexOf = Array.prototype.indexOf;
 +      indexOf = Array.prototype.indexOf,
 +      
 +      // [[Class]] -> type pairs
 +      class2type = {};
  
  jQuery.fn = jQuery.prototype = {
        init: function( selector, context ) {
@@@ -309,7 -306,7 +309,7 @@@ jQuery.fn.init.prototype = jQuery.fn
  
  jQuery.extend = jQuery.fn.extend = function() {
        // copy reference to target object
 -      var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
 +      var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy, copyIsArray;
  
        // Handle a deep copy situation
        if ( typeof target === "boolean" ) {
@@@ -343,15 -340,10 +343,15 @@@
                                        continue;
                                }
  
 -                              // Recurse if we're merging object literal values or arrays
 -                              if ( deep && copy && ( jQuery.isPlainObject(copy) || jQuery.isArray(copy) ) ) {
 -                                      var clone = src && ( jQuery.isPlainObject(src) || jQuery.isArray(src) ) ? src
 -                                              : jQuery.isArray(copy) ? [] : {};
 +                              // Recurse if we're merging plain objects or arrays
 +                              if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
 +                                      if ( copyIsArray ) {
 +                                              copyIsArray = false;
 +                                              clone = src && jQuery.isArray(src) ? src : [];
 +
 +                                      } else {
 +                                              clone = src && jQuery.isPlainObject(src) ? src : {};
 +                                      }
  
                                        // Never move original objects, clone them
                                        target[ name ] = jQuery.extend( deep, clone, copy );
@@@ -437,7 -429,8 +437,8 @@@ jQuery.extend(
                // Catch cases where $(document).ready() is called after the
                // browser event has already occurred.
                if ( document.readyState === "complete" ) {
-                       return jQuery.ready();
+                       // Handle it asynchronously to allow scripts the opportunity to delay ready
+                       return setTimeout( jQuery.ready, 13 );
                }
  
                // Mozilla, Opera and webkit nightlies currently support this event
@@@ -490,7 -483,7 +491,7 @@@
        type: function( obj ) {
                return obj == null ?
                        String( obj ) :
 -                      toString.call(obj).slice(8, -1).toLowerCase();
 +                      class2type[ toString.call(obj) ] || "object";
        },
  
        isPlainObject: function( obj ) {
@@@ -802,11 -795,6 +803,11 @@@
        browser: {}
  });
  
 +// Populate the class2type map
 +jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
 +      class2type[ "[object " + name + "]" ] = name.toLowerCase();
 +});
 +
  browserMatch = jQuery.uaMatch( userAgent );
  if ( browserMatch.browser ) {
        jQuery.browser[ browserMatch.browser ] = true;