Actually does what https://github.com/jquery/jquery/commit/bab8079593913dbc689404aa4e83c46b9b4c9355 promised: passes the jXHR as the third argument of prefilters and transport factories. Comitted for completness even if if backs this out in the end and only land in 1.5.1.

Fixes #5866. Issue number in previous commit was wrong both in comments and commit message. See https://github.com/jquery/jquery/commit/0e5b341cc0f3f9bf0f6659e09704f2267cfdfdba for previous commit.

Fixes #5856. Adds document protocol at the beginning of URLs without protocol (thanks go to skrings for the initial pull request). Simplifies cross-domain detection regexp and logic as a consequence. Also took the opportunity to remove an unused variable. Unit test added.

Fixes #8054 by reverting feature enhancement 5812 (4920). Regexps no longer searches for %3F in url or data to find jsonp callback placeholders.

This reverts commit 6d358c0c.

Makes prefilters and transport inspection more robust and uses better variable names for readability.

Revised internal implementation of ajaxPrefilter() and ajaxTransport(). Everything is shorter and more efficient now. Also fixes a couple spacing issues that remained.

Fixes some coding style issues in core.js. In jQuery.fn.ready(), simplifies the whole code (for better backward compatibility) and removes redefinition of the function itself (in order not to clash with proxying). Also, in jQuery.when(), removes unnecessary closure and early rejection test and makes use of then instead of done/fail (better interoperability).

Re-organizes ajax.js: prefilters and transports are no longer stored in ajaxSettings (their structure is not handled correctly by extend() and was causing some overhead when constructing the final options map in ajax()); base function for ajaxPrefilter and ajaxTransport has been renamed and split in two (one for inspection, one for addition); response/dataType determination and data conversion logics have been externalized from the ajax() internal callback; data conversion no longer sets responseXXX fields; some minor re-formatting and simplifications.

Merge branch 'fix-7398-frameset-docs' of https://github.com/dmethvin/jquery into dmethvin-fix-7398-frameset-docs

Revert "Make sure that focusin/focusout bubbles in non-IE browsers." This was causing problems with the focusin event, see: #7340.

This reverts commit 88068f82.

Conflicts:

	src/event.js
	test/unit/event.js

Replaces "text in-between" technique with a full-fledged one-level transitive search for converters (unit tests added). Also cleans up auto dataType determination and adds converter checks in order to guess the best dataType possible.

Merge branch 'fix-7853-add-context' of https://github.com/dmethvin/jquery into dmethvin-fix-7853-add-context

Moves determineResponse logic into main ajax callback. Puts responseXXX fields definitions into ajaxSettings.

Bring jQuery('#id') and jQuery('body') logic back into core (while leaving it in Sizzle at the same time). Was causing too much of a performance hit to leave it all to Sizzle.