Add 'email' and 'email.mime.*' to all esky builds

Fixes "ImportError: No module named audio" on SmartOS

Uses 'email.mime.*' rather than a full list of entries.

Also removes a duplicate entry for 'fileinput' from the
windows section that was added to the main FREEZER_INCLUDES

Email thread that suggested this fix:
https://groups.google.com/forum/#!msg/salt-users/_9ynHspSgjk/so0hRdbaPM0J

Tested as a fix to a 0.17.1 checkout on SmartOS.
Merge pull request #8166 from nshalman/freezer_fixes

Add 'email' and 'email.mime.*' to all esky builds