ensure the attribute name string is initalized before using it (closes #16839)
merge heads
call PyErr_Clear() when ignoring error from PyNumber_Int (closes #15516)

Patch from Tom Tromey.
add Tom Tromey to ACKS
untabify
Issue #16828: Fix error incorrectly raised by bz2.compress('').

Patch by Martin Packman.
issue 10527: fix missing import
Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB