New sieve machine accessor functions

* include/mailutils/sieve.h (mu_sieve_get_mailbox)
(mu_sieve_get_argc): New protos.
* libmu_sieve/runtime.c: New functions.

@@ -279,9 +279,13 @@ void mu_sieve_set_data (mu_sieve_machine_t mach, void *);
 mu_message_t mu_sieve_get_message (mu_sieve_machine_t mach);
 size_t mu_sieve_get_message_num (mu_sieve_machine_t mach);
 
+mu_mailbox_t mu_sieve_get_mailbox (mu_sieve_machine_t mach);
+
 int mu_sieve_is_dry_run (mu_sieve_machine_t mach);
 int mu_sieve_set_dry_run (mu_sieve_machine_t mach, int val);
 
+void mu_sieve_get_argc (mu_sieve_machine_t mach, size_t *args, size_t *tags);
+
 mu_mailer_t mu_sieve_get_mailer (mu_sieve_machine_t mach);
 int mu_sieve_get_locus (mu_sieve_machine_t mach, struct mu_locus *);
 char *mu_sieve_get_daemon_email (mu_sieve_machine_t mach);

@@ -183,6 +183,12 @@ mu_sieve_get_locus (mu_sieve_machine_t mach, struct mu_locus *loc)
   return 1;
 }
 
+mu_mailbox_t
+mu_sieve_get_mailbox (mu_sieve_machine_t mach)
+{
+  return mach->mailbox;
+}
+
 mu_message_t
 mu_sieve_get_message (mu_sieve_machine_t mach)
 {
@@ -203,6 +209,15 @@ mu_sieve_get_identifier (mu_sieve_machine_t mach)
   return mach->identifier;
 }
 
+void
+mu_sieve_get_argc (mu_sieve_machine_t mach, size_t *args, size_t *tags)
+{
+  if (args)
+    *args = mach->argcount;
+  if (tags)
+    *tags = mach->tagcount;
+}
+
 int
 mu_sieve_is_dry_run (mu_sieve_machine_t mach)
 {