Added some additional checks to make sure that the correct methods are being used in IE on XML documents.

A follow-up for bug #3945. ID selectors don't work in querySelectorAll on XML documents, so we just fall back to the normal engine.

Make sure that [name=foo] and #id selectors don't use the native methods on XML documents (since id and name attributes may not be defined by a DTD and will return nothing instead. Fixes jQuery bug #3945.

Now handle the case where Safari's querySelectorAll fails on uppercase characters in quirks mode. Added a test to check for it and re-worked some of the existing tests to better handle document order issues. Fixes jQuery bug #3840.

After discussing it with a number of users I've decided to revert the change to [name!=value]. It is now equal to :not([attr!=value]). Attempting to switch it to [attr]:not([attr!=value]) produced some really non-obvious results and confused users. Fixes jQuery bug #3884.

CHILD positions were being cached improperly. Tweaked it and added a test to make sure it doesn't happen again. Fixes jQuery bug #3924.

Focused support of .live(). stopPropagation and stopImmediatePropagation are not supported - and do not do what the use would expect.

Re-worked the logic for where .selector and .context are added for ID selectors (especially ones that aren't found). Fixes jQuery bug #3833.

jquery event: closes #3843. Some events' timeStamp are wrong on Firefox, we don't rely on the native value anymore. timeStamp reflects object creation, not last event triggered.

           jQuery.timerId is now a local var and it's not null'ed anymore.

core: Ant target to generate openAjaxMetadata; uses http://www.exfer.net/jquery/createjQueryXMLDocs.py to get the data from the wiki, and transforms it using xslt (see build/style.xsl)