Change sideplane method for detection of ray inside triangle

[kharon4]

Change side plane to Local cord based detection

• Better performance
• Takes less space
  Instead of {vec3f normal , vec3f sideNormals[3] }
  Use {vec3f normal , vec3f data(1/b.n, b.a, 1/a^2), vec3f n }
  a = v[1]-v[0] , b = v[2] - v[0]
  Here n is perpendicular to a and |n| = 1;
• Free local coord vals

v = l1 * a + l2 * b
v.n = l2 * b.n   l2 = v.n/b.n
v.a = l1 * a.a + l2 * b.a   l1 = (v.a- l2 * b.a)/a*a '