Work around glib messing with signal handlers more than it should
* src/process.c (init_process_emacs): force glib's g_unix_signal handler into lib_child_handler where it should belong. Copyright-paperwork-exempt: yes
* src/process.c (init_process_emacs): force glib's g_unix_signal handler into lib_child_handler where it should belong. Copyright-paperwork-exempt: yes