Converted the instances of const built in types being returned from methods

and passed as paramters into straight forward non const built in types,
i.e. const bool foogbar(const int) becomes bool foobar(int).

src/osg/Transform.cpp

@@ -29,7 +29,7 @@ void Transform::setReferenceFrame(ReferenceFrame rf)
     else setCullingActive(true);
 }
 
-const bool Transform::computeBound() const
+bool Transform::computeBound() const
 {
     if (!Group::computeBound()) return false;