looks like no build system changes, just some algorithm adjustments. tested rename working OK.
Created attachment 419912 [details, diff] 0001-media-gfx-pngquant-2.5.2-bump-fix-DESCRIPTION.patch
Created attachment 422434 [details, diff] 0001-media-gfx-pngquant-2.5.2-bump-fix-DESCRIPTION.patch
Twenty-odd days with no response and no bump, I will take proxy maintenance of this package.
commit d1793c9 (HEAD, master) Author: Alex Xu <alex_y_xu@yahoo.ca> Date: Sun Dec 20 11:36:47 2015 -0500 media-gfx/pngquant: 2.5.2 bump, fix DESCRIPTION Also add myself as maintainer. Package-Manager: portage-2.2.26 Gentoo-Bug: 568194 Signed-off-by: Patrice Clement <monsieurp@gentoo.org> create mode 100644 media-gfx/pngquant/pngquant-2.5.2.ebuild