[issue12662] Allow configparser to process suplicate options

[ojab]

New submission from ojab <ojab at ojab.ru>:

Allow configparser to process duplicate options, just concatenating it's values, so using file

[sect1]
opt1=asd;
opt2=qwe
opt1=fgs

we will have config['sect1']['opt1'] == 'asd;fgs'

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components: Library (Lib)
messages: 141463
nosy: ojab
priority: normal
severity: normal
status: open
title: Allow configparser to process suplicate options
type: feature request
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12662>
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