land a $(window).scrollTop() workaround for WebOS in jQuery core

[scottjehl]

Waiting on possible workaround from Dave Balmer.

[scottjehl]

I did a little testing on this to see if I could find any irregularities in the DOM on webOS.

Nothing seemed out of place. I'm not sure where an alternate scrollable element could be found, if Palm's browser does generate one.

Tests I ran:
$('html').children(0) --> HEAD
$('html').children(1) --> BODY
$('body').children(0) --> DIV.ui-page (part of our markup)
$('html').parent() --> DOCUMENT

[scottjehl]

Test page for attempting to find a WebOS scrollTop workaround. All values current report 0 or something falsy on Palm :
http://jsbin.com/unufu3/5/edit

[scottjehl]

Closing as a duplicate with another issue.