FortAwesome/Font-Awesome — pull request #1727 by MartinSeeler (2013-08-06 12:41:00+00:00)
Title: Added support for font smoothing in Firefox 25 on Mac OS X

Even though this vendor prefix will be available earliest in Firefox 25+ and only on Mac OS X, it's not a big deal to include it now.

Related to issue #1591
Based on https://bugzilla.mozilla.org/show_bug.cgi?id=857142#c83