Fix the way G__memberfunc_setup() calculates the

function property ptradjust.  The translation from
cint5 missed initializing the pointer to zero,
and the return type for the cast which is done to
calculate the pointer adjustment was incorrect,
it was the class type instead of a pointer to the
class type.

Make sure that reflex properties are copied correctly,
there are some non-default copy semantics and we
must be sure to have real copy constructors
and operator= functions for the type heirarchy.

-- Paul Russo


git-svn-id: http://root.cern.ch/svn/root/trunk@24058 27541ba8-7e3a-0410-8455-c3a389f83636