The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/portage-stable/+/0b566863b17e112c8cd0d9388627a7c9a56685d0

commit 0b566863b17e112c8cd0d9388627a7c9a56685d0
Author: Simon Glass <sjg@chromium.org>
Date: Fri Jun 09 16:16:28 2017

perl-cleaner: upgraded package to upstream

Upgraded app-admin/perl-cleaner to version 2.20 on amd64, arm, x86

BUG= chromium:710114 
TEST=build on reef, daisy, x86-zgb

Change-Id: I2a3c430c309301ac07ebf83c6fc8c8d46ead7074
Reviewed-on: https://chromium-review.googlesource.com/527255
Commit-Ready: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>

[delete] https://crrev.com/73a12495d4e636bc4b68fe0fbfcae3dbbfc00689/app-admin/perl-cleaner/perl-cleaner-2.16.ebuild
[add] https://crrev.com/0b566863b17e112c8cd0d9388627a7c9a56685d0/metadata/md5-cache/app-admin/perl-cleaner-2.20
[delete] https://crrev.com/73a12495d4e636bc4b68fe0fbfcae3dbbfc00689/metadata/md5-cache/app-admin/perl-cleaner-2.16
[add] https://crrev.com/0b566863b17e112c8cd0d9388627a7c9a56685d0/app-admin/perl-cleaner/files/perl-cleaner-2.20-prefix.patch
[modify] https://crrev.com/0b566863b17e112c8cd0d9388627a7c9a56685d0/app-admin/perl-cleaner/Manifest
[add] https://crrev.com/0b566863b17e112c8cd0d9388627a7c9a56685d0/app-admin/perl-cleaner/perl-cleaner-2.20.ebuild
[modify] https://crrev.com/0b566863b17e112c8cd0d9388627a7c9a56685d0/app-admin/perl-cleaner/metadata.xml