Disabled external gits

cs440-acg/ext/eigen/doc/TopicEigenExpressionTemplates.dox

@@ -0,0 +1,12 @@
+namespace Eigen {
+
+/** \page TopicEigenExpressionTemplates Expression templates in Eigen
+
+
+TODO: write this dox page!
+
+Is linked from the tutorial on arithmetic ops.
+
+*/
+
+}