Move cases of .replace(re, Function) out from inline (to avoid being redeclared on every use). Fixes #4114.

Made more formatting changes to manipulation.js. Also moved all inline RegExp into a top declaration.

Standardizing on .test() and .exec() - moving away from using .match() for RegExp. Fixes jQuery bug #4113.

removing ambiguous offset tests for now... results are different due to rendering differences but are correct for the given browser

therefore require dequeue to always leave the element it has dequeued on
the queue.

  - In the fx queue, a progress sentinel is added when a queue element
    is dequeued.
  - The sentinel is ignored when dequeue is called explicitly
  - When adding a new element to the fx queue, queue() checks if
    the progress sentinel is present. If not, it calls dequeue()

  - Also added jQuery.isEmptyObject

 - Both now support Function, Element, Selector, and Arrayish (including jQuery object)

  - Also update jQuery.isObject to handle this case correctly

Scope 'document' locally (also useful for sandboxing). Patch from Andrea Giammarchi. Fixes bug #4905.

We only support wrapping the first element around an element (all others are ignored). Fixes ticket #4903.

Fixed wrapping of elements that hold text nodes. Thanks to David Flanagan for the patch. Fixes #4902.

Fixed the handling of .status == 304 in Opera (it always returns 0). Also silently "pass" in Opera 9.6 (which is unable to send the correct headers with setRequestHeader). Follow-up to bug #4764.