* main.c (tapp_setup_encoding): change jfbterm.conf format
* jfbterm.conf.sample: update
* Makefile.am (install-exec-hook): added
* term.h (TTerm): delete ttygid, ttygidQ
* term.c (tterm_init): delete ttygid, ttygidQ
(tterm_set_utmp): no need to get "tty" group
(tterm_reset_utmp): no need to reset slave pty device
* term.c (tterm_start): use tterm_wakeup_shell
(tterm_wakeup_shell_as_child): deleted
(tterm_wakeup_shell): added, use login_pty(3)