Change eigensolver initial iterate (bugfix)

- Previously initial iterate was {1,1,1} for eigensolver in
  determining tangent plane. If the normal happens to be {1,1,1}
  this causes undesired behavior (becomes leading tangent
  direction). Now the initial iterate is chosen as a random vector.

cmake/Compadre_Version.txt

@@ -1 +1 @@
-1.5.2
+1.5.3

src/Compadre_LinearAlgebra_Definitions.hpp

@@ -18,7 +18,7 @@ void largestTwoEigenvectorsThreeByThreeSymmetric(const member_type& teamMember,
         double eigenvalue_relative_tolerance = 1e-6; // TODO: use something smaller, but really anything close is acceptable for this manifold
 
 
-        double v[3] = {1,1,1};
+        double v[3] = {rand_gen.drand(maxRange),rand_gen.drand(maxRange),rand_gen.drand(maxRange)};
         double v_old[3] = {v[0], v[1], v[2]};
 
         double error = 1;