hey hawking, pylint 0.15.2 is available since a few months. as i can see it is a bugfix release so no big changes are necessary. you can also drop the two test patches since these patches are included in this release.
Created attachment 178198 [details, diff] pylint-0.15.2.ebuild.patch
+ 24 Jan 2009; Patrick Lauer <patrick@gentoo.org> +pylint-0.15.2.ebuild: + Bump to 0.15.2, fixes #254653