[core] Remove test against blender < 2.62

We only support Blender 2.62+, so remove test against previous version.
It should be particularly useful here, as transformation3D is probably
an 'hot path'.
[mw] socket reader must return a boolean

Must handle #544 for socket
[middleware/pocolibs] datastream reader must return a bool

Handle #544 for pocolibs
[middleware] moos actuator datastream handler must return bool

Handle #544 for MOOS
[bin/morse] 2.71 seems to works fine for Morse