From Mikkel Gjøl, addition of paramter set/get methods to osgGA::*Manipulators,

change of ' ' to GUIEventAdapter::KEY_Space, fix to url in Matrix_implementation.cpp.
Syntax fixes by Robert Osfield to above submission fix inconsistencies with normal
OSG coding style.

src/osg/Matrix_implementation.cpp

@@ -74,7 +74,7 @@ void Matrix_implementation::set(const Quat& q_in)
 
     // Source: Gamasutra, Rotating Objects Using Quaternions
     //
-    //http://www.gamasutra.com/features/programming/19980703/quaternions_01.htm
+    //http://www.gamasutra.com/features/19980703/quaternions_01.htm
 
     double wx, wy, wz, xx, yy, yz, xy, xz, zz, x2, y2, z2;