[C++] Move explog.hpp from math to spatial.

CMakeLists.txt

@@ -61,7 +61,6 @@ INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
 
 
 SET(${PROJECT_NAME}_MATH_HEADERS
-  math/explog.hpp
   math/sincos.hpp
   )
 
@@ -79,6 +78,7 @@ SET(${PROJECT_NAME}_SPATIAL_HEADERS
   spatial/fwd.hpp
   spatial/skew.hpp
   spatial/act-on-set.hpp
+  spatial/explog.hpp
   )
 
 SET(${PROJECT_NAME}_MULTIBODY_JOINT_HEADERS

src/math/explog.hpp → src/spatial/explog.hpp

@@ -16,8 +16,8 @@
 // Pinocchio If not, see
 // <http://www.gnu.org/licenses/>.
 
-#ifndef __math_explog_hpp__
-# define __math_explog_hpp__
+#ifndef __spatial_explog_hpp__
+# define __spatial_explog_hpp__
 
 # include <Eigen/Geometry>