Patch to get_species_and_object_type(): If a database adaptor does not

have a corresponding 'species.stable_id_prefix' meta key it should not
be skipped completely.  Solves a problem with Eugene's yeast database.

modules/Bio/EnsEMBL/Registry.pm

@@ -2428,8 +2428,13 @@ sub get_species_and_object_type {
 
       my $species = $dba->species();
 
+      my $fetched_something = 0;
+
       while ( $sth->fetch() ) {
+        $fetched_something = 1;
+
         my $standard_prefix = 0;
+
         foreach my $allowed_prefix (@allowed_prefixes) {
           if (
             substr( $prefix, 0, length($allowed_prefix) ) eq
@@ -2453,6 +2458,12 @@ sub get_species_and_object_type {
 
       }
 
+      if ( !$fetched_something ) {
+        # This database didn't have a matching
+        # 'species.stable_id_prefix' key in its meta table.
+        push( @nonstandard_prefix_species, $species );
+      }
+
     } ## end foreach my $dba ( @{ $self->get_all_DBAdaptors...})
   } ## end if ( !%stable_id_prefix)