* gnu/packages/mcrypt.scm (mcrypt)[source]: Add patches. * gnu/packages/patches/mcrypt-CVE-2012-4409.patch, gnu/packages/patches/mcrypt-CVE-2012-4426.patch, gnu/packages/patches/mcrypt-CVE-2012-4527.patch: New variables. * gnu/local.mk (dist_patch_DATA): Add them.