[patch] smart pointer support

[Tom Tromey]

>>>>> "Ulrich" == Ulrich Weigand <uweigand@de.ibm.com> writes:

Ulrich> In *some* cases, the value will in addition be of type
Ulrich> lval_memory meaning that the value is also present in inferior
Ulrich> memory, *and you know where*.

Along these lines, I'm curious to know why value_must_coerce_to_target
returns 0 for TYPE_CODE_STRUCT.  Maybe that is just an oversight?
Perhaps it should also check for lval_internalvar_component?

Tom