tests/test-config-case.t

largefiles: fix exception hack for i18n (issue3197)

Properly fixing this is quite a bit trickier.

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  $ hg init

  $ echo '[Section]' >> $HGRCPATH
  $ echo 'KeY = Case Sensitive' >> $HGRCPATH
  $ echo 'key = lower case' >> $HGRCPATH

  $ hg showconfig Section
  Section.KeY=Case Sensitive
  Section.key=lower case