[issue4258] Use 30-bit digits instead of 15-bit digits for Python integers.

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Note that to avoid "bad marshal data" errors, you'll probably need to do a 
'make distclean' before rebuilding with this patch.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4258>
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