GitLab

(proced-sorting-schemes-alist, proced-sorting-scheme): New variables.
(proced-sort-pcpu, proced-sort-pmem, proced-sort-pid)
(proced-sort-start, proced-sort, proced-sort-time): New commands.
(proced-update): Use proced-sorting-scheme.  Update modeline.
(proced-send-signal): Use nreverse.
(proced-sorting-scheme-p): New function.