Goal:
    A : Type  p : A → bool  l : list A
  ============================
   (All (λ x : A, p x) l → forallb p l)


DEBUG:Going to execute:
<coq-core.plugins.ssreflect::ssrmove@1> $1 $2
DEBUG LTAC Evaluated term: forallb_Forall
DEBUG LTAC Evaluated term: (iffRL (P:=Forall (λ x : A, p x) l)
                              (forallb_Forall p l) _view_subject_)
DEBUG LTAC Evaluated term: Forall_All