Here is the modified 1.7.3 ebuild with winepulse-patches patches to bump the version to 1.7.4 since its been released. attachments added later.
Created attachment 360696 [details, diff] ebuild patch
Created attachment 360698 [details, diff] winepulse-patches patch
Created attachment 360700 [details] the winepulse-patches-1.7.4.tar.bz2 The archive of the working winepulse-patches patch set
Bumped, thanks. (However, instead of your patch, I used the upstream updated winepulse patch set.) +*wine-1.7.4 (13 Oct 2013) + + 13 Oct 2013; Alexandre Rostovtsev <tetromino@gentoo.org> +wine-1.7.4.ebuild, + wine-9999.ebuild: + Version bump, see http://www.winehq.org/announce/1.7.4 for the announcement + (bug #487780).