(*init_func) instead of calling scm_appinit; it's ucky to
hard-code names for the user's procedures.
* init.h (scm_boot_guile): Adjust declaration.
* init.h (scm_start_stack, scm_restart_stack): Use PROTO;
eliminate all the __STDC__ conditionals.
(scm_boot_guile): Add declaration.
* init.c (scm_start_stack, scm_restart_stack, scm_boot_guile):
Remove __STDC__ conditionals around function definitions; the
declarations in init.h will provide the same information, more
usefully.
