A humble meta-suggestion, if I might: it would be nicer if you explicitly specified what source tree this patch is for, for instance: [PATCH glibc] or [PATCH gnumach] instead of just [PATCH]. (There is the --subject-prefix option in git format-patch for this.)
This is typically easy to infer by looking at the file paths, e.g. sysdeps/htl clearly points at glibc, kern/task.c is naturally GNU Mach, rumpdisk/main.c is of course the Hurd proper. But just Makefile.am — I don't know what this is. Is this GNU Mach, GNU MIG, glibc, the Hurd, something else? (Actually, looking at the actual patch, this seems to be GNU Mach.) Thanks for your work! Sergey