Faced with concerns that users might switch over to IE8 or Google’s new Chrome so they can browse porn, er, we mean privately, Mozilla has reversed course on Privacy Mode, which had been out for Firefox 3.1.  The upcoming release will indeed support Privacy Mode, popularly known as “Porn Mode.” Both IE8 in its current Beta 2 form and Chrome in its (barely) beta form support Privacy Mode.In a note from this week’s weekly status meeting, Mozilla said: “Private Browsing Mode: Ehsan [Akhgari] went and implemented