scm_s_expression, scm_s_test, scm_s_body, scm_s_bindings,
scm_s_variable, scm_s_clauses, scm_s_formals. In eval.c the
definitions are make static and renamed from scm_s_xxx to s_xxx.
In deprecated.c the original definitions are copied.
* deprecated.h, eval.c, eval: Deprecated SCM_EVALIM2, SCM_EVALIM,
SCM_XEVAL and SCM_XEVALCAR. The macro definitions are moved from
eval.h into eval.c and a copy (slightly modified to work in user
code) is placed into deprecated.h.
* eval.c: Use the local static s_xxx definitions instead of the
scm_s_xxx definitions throughout.
scm_make_subr_with_generic, scm_make_subr_opt,
scm_call_catching_errors, scm_make_smob_type_mfpe, scm_set_smob_mfpe,
scm_strprint_obj, scm_read_0str, scm_eval_0str, SCM_CHARS, SCM_UCHARS,
SCM_LENGTH): Re-added from the release_1_6 branch. Some have been
slightly rewritten. (scm_i_object_chars, scm_i_object_length): New,
to support SCM_CHARS, SCM_UCHARS, and SCM_LENTH.
