Use a bare module with no imports for ＠pyimport

[simonster]

This avoids warnings about conflicting imports

[simonster]

Hmm, I thought this would work since the Module constructor just calls jl_f_new_module, which doesn't do much else, and it does indeed suppress the warning, but it seems that there's printing code that expects modules to have parents, and I'm not sure how to set that from Julia (yet).

[simonster]

This is pretty ugly, but it looks like it works. A better long-term approach might be to extend the Module constructor to allow creation of baremodules.

[stevengj]

Thanks.

[stevengj]

(Gotta fix that Julia 0.3 failure, but that seems unrelated to your patch. Unfortunately, I can't seem to replicate that failure locally.)