Issue #19145:  Remove duplicate ACKS entry
merge
#20295: Teach imghdr to recognize OpenEXR format images.

Patch by Martin Vignali, test by Claudiu Popa.
#21476: Unwrap fp in BytesParser so the file isn't unexpectedly closed.

This makes the behavior match that of Parser.  Patch by Vajrasky Kok.
Merge #21476: Unwrap fp in BytesParser so the file isn't unexpectedly closed.
Issue #21829: Fix running test_ctypes on Windows with -O or -OO
Issue #21829: Merge with 3.4
Issue #21858: Better handling of Python exceptions in the sqlite3 module.
(Merge 3.4) Issue #21858: Better handling of Python exceptions in the sqlite3
module.