want to test for OSError.

of town, and it will have to do for now.

Fixes issue 1039.

email.base64mime, but test_smtplib still has failures for me.  They are
timeout errors so think they're more related to my current wacky network setup
than bugs remaining in the code related to the email package.

This also r57693 that got clobbered with the sandbox sync, and fixes a couple
of other minor problems that cropped up.  I will kill the sandbox branch next.

The email package now has 11F/11E.

the bytes() constructor when passing str.

not support them, anyway.

still fails, but gets a little further with this change.

  b * sys.maxint  # from test_bytes.py line 379

Caused:  SystemError: error return without exception set

This will hopefully fix the problem on a Windows buildbot with test_sundry.