Merge pull request rust-lang#12 from qres/patch-1

fix tuple example in slides

tex/final-presentation/slides.tex

@@ -391,7 +391,7 @@
           bb0: {
               var0 = arg0.0;         // get the 1st part of the pair
               var1 = arg0.1;         // get the 2nd part of the pair
-              return = (var0, var1); // build a new pair in the result
+              return = (var1, var0); // build a new pair in the result
               goto -> bb1;
           }