libtool: add 2.6.0 temp link (#8296)

* libtool: add 2.6.0 temp link

* fixup

* fixup

packages/l/libtool/xmake.lua

@@ -5,11 +5,13 @@ package("libtool")
     add_urls("http://ftpmirror.gnu.org/libtool/libtool-$(version).tar.gz",
              "https://mirrors.ustc.edu.cn/gnu/libtool/libtool-$(version).tar.gz",
              "git://git.savannah.gnu.org/libtool.git")
+    add_urls("https://distfiles.gentoo.org/distfiles/78/libtool-$(version).tar.xz", {alias = "temp"})
 
     add_versions("2.4.6", "e3bd4d5d3d025a36c21dd6af7ea818a2afcd4dfc1ea5a17b39d7854bcd0c06e3")
     add_versions("2.4.5", "509cb49c7de14ce7eaf88993cf09fd4071882699dfd874c2e95b31ab107d6987")
     add_versions("2.4.7", "04e96c2404ea70c590c546eba4202a4e12722c640016c12b9b2f1ce3d481e9a8")
     add_versions("2.5.4", "da8ebb2ce4dcf46b90098daf962cffa68f4b4f62ea60f798d0ef12929ede6adf")
+    add_versions("temp:2.6.0", "69e6d28ae880fda08e0dc080ef2e38077ea2765a0d84e1afcfcfe1e605c911ac")
 
     on_load(function (package)
         if package:is_library() then