compatibility of jquery >=1.9

The code in question:

// Work around for Internet Explorer box model problems.
  if (($.support && !($.support.boxModel === undefined) && !$.support.boxModel) || ($.browser.msie && parseInt($.browser.version) <= 7)) {
    $('span.ext, span.mailto').css('display', 'inline-block');
  }

Both $.support and $.browser are either deprecated or no longer advised to be used. This peice of code is used because of box model problems in ie 7 and below see http://en.wikipedia.org/wiki/Internet_Explorer_box_model_bug.

This post says that you should force it using the doctype, which would mean we could remove that code and just tell people to avoid quirks mode.
http://stackoverflow.com/questions/4007866/how-to-solve-ie6-box-model-pr...

For reference, here is the previous issue #795360: Mailto and Extlink images not showing.

First patch.

Removed the offending line.

Based off of feedback from a previous issue, we are going to avoid support for anything below IE8.

This will need lots of testing.

Version needs to be DEV to test against latest changes.

4: extlink-2124457-1.patch queued for re-testing.

FYI, 4: extlink-2124457-1.patch works. Tested on DEV.

Looks like this wasn't applied to the 7.x-1.x branch, so I committed it there as well. Thanks guys!