[web2py] set request function forn _env in run @ shell.py

[Carlos]

Hi,

The request function is not being set when executing from shell:  -S a/c/f

I propose to include f=f when creating _env in run @ shell.py:

   _env = env(a, c=c, f=f, import_models=import_models)

I'm using latest web2py trunk.

Thanks,

   Carlos