spatial/se3: rename __equal__ into isEqual

src/spatial/se3-base.hpp

@@ -96,7 +96,7 @@ namespace pinocchio
     }
     
     bool operator==(const Derived & other) const
-    { return derived().__equal__(other); }
+    { return derived().isEqual(other); }
     
     bool operator!=(const Derived & other) const
     { return !(*this == other); }

src/spatial/se3-tpl.hpp

@@ -252,7 +252,7 @@ namespace pinocchio
     { return this->act_impl(m2);}
     
     template<int O2>
-    bool __equal__(const SE3Tpl<Scalar,O2> & m2) const
+    bool isEqual(const SE3Tpl<Scalar,O2> & m2) const
     {
       return (rotation() == m2.rotation() && translation() == m2.translation());
     }