fix aot script (#673)

Author: goropikari

aot/compile.jl

@@ -7,7 +7,7 @@ exec "${JULIA:-julia}" "$@" ${BASH_SOURCE[0]}
 using Pkg
 Pkg.activate(@__DIR__)
 Pkg.add("MacroTools")
-Pkg.develop(PackageSpec(path=dirname(@__DIR__)))
+Pkg.develop(PackageSpec(name="PyCall", path=dirname(@__DIR__)))
 Pkg.build("PyCall")
 Pkg.activate()