#4 Missing bone class members

[Bruno Gonzalez]

There are some errors when trying to compile ogrecollada head (r81) against several ogre versions (r7743 and r7985):

../../OgreCollada/OgreCollada/src/ColladaAnimation.cpp:1330: error: 'class Ogre::Bone' has no member named 'getWorldPosition'
../../OgreCollada/OgreCollada/src/ColladaAnimation.cpp:1331: error: 'class Ogre::Bone' has no member named 'getWorldOrientation'
../../OgreCollada/OgreCollada/src/ColladaAnimation.cpp:1333: error: 'class Ogre::Bone' has no member named 'getWorldPosition'