Import renaming does not work for macros

[fredrikekre]

Import renaming does not work for macros, but it doesn't error either:

julia> module A
           macro x(y) end
       end
Main.A

julia> import .A: @x as f

julia> f
ERROR: UndefVarError: f not defined

julia> import .A: @x as @f

julia> @f
ERROR: LoadError: UndefVarError: @f not defined
in expression starting at REPL[5]:1

I suggest allowing import A: @x as @f but disallowing import A: @x as f (this is what ImportMacros.jl does).