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/Sequence.cpp

@@ -47,7 +47,7 @@ void Sequence::setTime(int frame, float t)
         }
 }
 
-const float Sequence::getTime(int frame) const
+float Sequence::getTime(int frame) const
 {
     if (frame >= 0 && frame < (int) _frameTime.size())
         return _frameTime[frame];