fun expressions and abstract forms

[Yariv Sadan]

> C = smerl:new(foo),
> smerl:add_func(C, bar, fun() -> 1+1 end),
> smerl:compile(C),
> foo:bar(). % return 2
>

fix:

{ok, C1} = smerl:add_func(C, bar, fun() -> 1+1 end),
smerl:compile(C1)

Yariv