Commit Briefs
remove proc_ispeer()
unused, and was dropped by other copies of proc.c; reduces the diff with httpd' proc.c.
backout 5586087cee29f04779e6998b464d33c1fb4235a9
now the configure provides WAIT_ANY on any platform; no need to deviate from "standard" proc.c
include <grp.h> (setgroups) for portability
linux has it there...