Scoping of quote expressions

[thautwarm]

julia> solve_from_local(quote
           x = :(x + 1)
       end)
quote
    #= REPL[6]:2 =#
    @x = $(Expr(:quote, :((@global +)(@x, 1))))
end

:(x+1) shouldn't be analysed. The things can be analysed in a quotation are $ splices, e.g.:

x = :($x + 1)  # now we can analyse the `x` in :($x + 1)