* init.c (scm_boot_guile_1): Added scm_init_objects ().

* init.c (scm_boot_guile_1): Added scm_init_objects ().
Added #include "objects.h"

* eval.c (scm_makprom): Added SCM_DEFER_INTS and SCM_ALLOW_INTS.
Add #include "feature.h".

* ports.h (SCM_EOF_OBJECT_P): New macro predicate.
This test is needed at many places in the code and should be
abstracted.  (Motivated by the need of this test in libguiletk.)

* ports.c (scm_eof_object_p), vports.c (sfgetc), strports.c
(scm_eval_string), load.c (scm_primitive_load,
scm_read_and_eval_x), gh_eval.c (gh_eval_str):
Use SCM_EOF_OBJECT_P.

* eval.c (scm_init_eval): Add feature `delay'.