rb_iterate now takes rb_block_call_func_t

After 5e86b005c0, I now think ANYARGS is
dangerous and should be extinct.  This commit makes rb_iterate free
from ANYARGS.

ext/openssl/ossl_ssl.c

@@ -592,7 +592,7 @@ ssl_renegotiation_cb(const SSL *ssl)
 #if !defined(OPENSSL_NO_NEXTPROTONEG) || \
     defined(HAVE_SSL_CTX_SET_ALPN_SELECT_CB)
 static VALUE
-ssl_npn_encode_protocol_i(VALUE cur, VALUE encoded)
+ssl_npn_encode_protocol_i(RB_BLOCK_CALL_FUNC_ARGLIST(cur, encoded))
 {
     int len = RSTRING_LENINT(cur);
     char len_byte;

include/ruby/ruby.h

@@ -1964,7 +1964,7 @@ VALUE rb_yield_splat(VALUE);
 VALUE rb_yield_block(VALUE, VALUE, int, const VALUE *, VALUE); /* rb_block_call_func */
 int rb_block_given_p(void);
 void rb_need_block(void);
-VALUE rb_iterate(VALUE(*)(VALUE),VALUE,VALUE(*)(ANYARGS),VALUE);
+VALUE rb_iterate(VALUE(*)(VALUE),VALUE,rb_block_call_func_t,VALUE);
 VALUE rb_block_call(VALUE,ID,int,const VALUE*,rb_block_call_func_t,VALUE);
 VALUE rb_rescue(VALUE(*)(ANYARGS),VALUE,VALUE(*)(ANYARGS),VALUE);
 VALUE rb_rescue2(VALUE(*)(ANYARGS),VALUE,VALUE(*)(ANYARGS),VALUE,...);

vm_eval.c

@@ -1193,7 +1193,7 @@ rb_iterate0(VALUE (* it_proc) (VALUE), VALUE data1,
 
 VALUE
 rb_iterate(VALUE (* it_proc)(VALUE), VALUE data1,
-	   VALUE (* bl_proc)(ANYARGS), VALUE data2)
+           rb_block_call_func_t bl_proc, VALUE data2)
 {
     return rb_iterate0(it_proc, data1,
 		       bl_proc ? rb_vm_ifunc_proc_new(bl_proc, (void *)data2) : 0,