Cleanup: fix typos in source code in intern/

Contributed by luzpaz.

Differential Revision: https://developer.blender.org/D13532

intern/libmv/libmv/autotrack/autotrack.cc

@@ -178,7 +178,7 @@ bool AutoTrack::TrackMarker(Marker* tracked_marker,
     return false;
   }
 
-  // Store original position befoer tracking, so we can claculate offset later.
+  // Store original position before tracking, so we can claculate offset later.
   Vec2f original_center = tracked_marker->center;
 
   // Do the tracking!

intern/libmv/libmv/build/build_config.h

@@ -239,7 +239,7 @@
 // Check what is the latest C++ specification the compiler supports.
 //
 // NOTE: Use explicit definition here to avoid expansion-to-defined warning from
-// being geenrated. While this will most likely a false-positive warning in this
+// being generated. While this will most likely a false-positive warning in this
 // particular case, that warning might be helpful to catch errors elsewhere.
 
 // C++11 check.

intern/libmv/libmv/image/tuple.h

@@ -25,7 +25,7 @@
 
 namespace libmv {
 
-// A vector of elements with fixed lenght and deep copy semantics.
+// A vector of elements with fixed length and deep copy semantics.
 template <typename T, int N>
 class Tuple {
  public:

intern/libmv/libmv/multiview/panography.h

@@ -38,7 +38,7 @@ namespace libmv {
 // The 2-point algorithm solves for the rotation of the camera with a single
 // focal length (4 degrees of freedom).
 //
-// Compute from 1 to 3 possible focal lenght for 2 point correspondences.
+// Compute from 1 to 3 possible focal length for 2 point correspondences.
 // Suppose that the cameras share the same optical center and focal lengths:
 //
 //   Image 1 => H*x = x'  =>  Image 2

intern/libmv/libmv/numeric/numeric.h

@@ -261,7 +261,7 @@ Mat3 RotationRodrigues(const Vec3& axis);
 // positive z-axis, and y is oriented close to up.
 Mat3 LookAt(Vec3 center);
 
-// Return a diagonal matrix from a vector containg the diagonal values.
+// Return a diagonal matrix from a vector containing the diagonal values.
 template <typename TVec>
 inline Mat Diag(const TVec& x) {
   return x.asDiagonal();

intern/libmv/libmv/numeric/poly.h

@@ -50,7 +50,7 @@ int SolveCubicPolynomial(Real a, Real b, Real c, Real* x0, Real* x1, Real* x2) {
   Real CQ3 = 2916 * q * q * q;
 
   if (R == 0 && Q == 0) {
-    // Tripple root in one place.
+    // Triple root in one place.
     *x0 = *x1 = *x2 = -a / 3;
     return 3;