serialize -> stringify

Also removed "Method to" prefixing because @rgrove complained about it &
I agree it's redundant.
Build io. Doc comment changes only.
stringify -> parse

copy, paste, win.

Or not.
Found another one!

stringify -> parse whack-a-mole!
parse turns query into an object
Merge branch 'querystring-parse-simple' of git://github.com/tivac/yui3 into live-docs
Build querystring. Comment changes only.
Add missing doc for "credentials" xdr config prop

Add missing documentation for "credentials" XDR configuration property to set withCredentials XHR property to true.
Build io. Comment changes only.
Merge branch 'live-docs' of https://github.com/yui/yui3 into live-docs