Add $s2m / $surrenderToMadness bar text variables that are logic only. Return true if the talent is spec'd.

Hey. I love the idea of showing TTD on the bar with thresholds that change the texts color for S2M usage in dungeons, but that's the thing - I only want this to show up if I'm actually running S2M. I see that there's a check available in the texts for Call of the Void equipped - I wonder if it'd be possible to add a check like "S2M specced" in a similar fashion so that I could only show TTD when using that talent? Or maybe you have some more eloquent solution to accomplish the same end result or something.

Requested by MikleTV on Curse.