Includes Proto callable ``boost::proto::functional::pop_back``.

A PolymorphicFunctionObject type that invokes the `fusion::pop_back()` algorithm on its argument.

A PolymorphicFunctionObject type that invokes the `fusion::pop_back()` algorithm on its argument.

`proto::callable`
This(Seq)
result< This(Seq const &) >
This(Seq &)
fusion::result_of::pop_back< Seq >
typename fusion::result_of::pop_back< Seq >::type `Seq &`

`fusion::pop_back(seq)`

typename fusion::result_of::pop_back< Seq const >::type `Seq const &`

`fusion::pop_back(seq)`