a few more bad ifndef headers

Former-commit-id: 45139a85c0e325a2a40e92b353c5676f3a374196

quat_to_mat.h

@@ -1,5 +1,5 @@
-#ifndef IGL_QUAT2MAT_H
-#define IGL_QUAT2MAT_H
+#ifndef IGL_QUAT_TO_MAT_H
+#define IGL_QUAT_TO_MAT_H
 // Name history:
 //   quat2mat  until 16 Sept 2011
 namespace igl

snap_to_canonical_view_quat.h

@@ -1,5 +1,5 @@
-#ifndef IGL_SNAP_TO_CANONICAL_QUAT_H
-#define IGL_SNAP_TO_CANONICAL_QUAT_H
+#ifndef IGL_SNAP_TO_CANONICAL_VIEW_QUAT_H
+#define IGL_SNAP_TO_CANONICAL_VIEW_QUAT_H
 // A Quaternion, q, is defined here as an arrays of four scalars (x,y,z,w),
 // such that q = x*i + y*j + z*k + w
 namespace igl