zlib ebuild has a typo referencing 1.5.2 instead of 1.2.5.
ping
Hi, Alan, from Bug 316815, fix will be included in the next release after 1.2.5. I don't think we need that patch for 1.2.5.1 (looking into Makefile.in suggests the same). Therefore I removed the patching at http://overlays.gentoo.org/proj/alt/changeset/60308/trunk/prefix-overlay/sys-libs/zlib/zlib-1.2.5.1-r2.ebuild test if it works on mint.
works.