[issue13155] Optimize finding the max character width

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

find_max_char5.patch:
 - don't use adjusted ~mask+1: "precompute" the right max_char
 - rename findwidth.h to find_max_char.h
 - add some #undef

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Added file: http://bugs.python.org/file23392/find_max_char5.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13155>
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