List assignment to package scalar ref

List assignment to package scalar ref

\ on the lhs returns a special magical scalar with set-magic that does
the aliasing.

I considered having a separate abind op that would be like aassign,
but different.  However, I realised that for ($x, \$y) = ... to work
it would have to duplicate all of aassign.  So I went with the sim-
pler magic implementation.