Move Microsoft's XHR tests into position.
fixing merge conflict regarding MANIFEST
removing isInitialized workaround for the double readystatechange event that should no longer be sent per spec
reversing expected order to align with spec
updating helper file to make sure it will work for all new tests
minor fixes, changed helper files, whitespace, no double readyState 1 events
added XPath refs and links
use an existing helper file instead of support/echo.php
more links and xpaths
mass removing L2 from title, just XMLHttpRequest is enough
removing some tests because very similar tests exist already. Also copied some assertations over to existing tests
link, xpath updates
mostly link / xpath changes
Merge pull request #50 from w3c/submission/Microsoft/XHR

Move Microsoft's XHR tests into position.