* gnu/packages/fontutils.scm (t1lib)[source]: Add patches. * gnu/packages/patches/t1lib-CVE-2010-2642.patch, gnu/packages/patches/t1lib-CVE-2011-0764.patch, gnu/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch: New variables. * gnu/local.mk (dist_patch_DATA): Add them.