Fixed #22097 -- Fixed change detection for TypedChoiceField

Thanks Igor Mitrenko for the report.
Fixed #22107 -- Fixed django.core.files.File object iteration.

Due to a mixup between text and bytes, iteration over
a File instance was broken under Python 3.

Thanks to trac user pdewacht for the report and patch.
Capitalize SQL keywords
Merge pull request #2332 from davesque/sql-doc-fixes

Capitalize SQL keywords
Capitalize SQL keywords
Merge pull request #2333 from davesque/sql-doc-fixes

Capitalize SQL keywords