unification of inheritance syntax

modules/Bio/EnsEMBL/Hive/DBSQL/AnalysisCtrlRuleAdaptor.pm

@@ -40,12 +40,11 @@ package Bio::EnsEMBL::Hive::DBSQL::AnalysisCtrlRuleAdaptor;
 
 use strict;
 use Carp;
-use Bio::EnsEMBL::DBSQL::BaseAdaptor;
 use Bio::EnsEMBL::Hive::AnalysisCtrlRule;
 use Bio::EnsEMBL::Utils::Argument;
 use Bio::EnsEMBL::Utils::Exception;
 
-our @ISA = qw(Bio::EnsEMBL::DBSQL::BaseAdaptor);
+use base ('Bio::EnsEMBL::DBSQL::BaseAdaptor');
 
 
 =head2 fetch_by_ctrled_analysis_id

modules/Bio/EnsEMBL/Hive/DBSQL/AnalysisDataAdaptor.pm

@@ -40,11 +40,11 @@
 package Bio::EnsEMBL::Hive::DBSQL::AnalysisDataAdaptor;
 
 use strict;
-use Bio::EnsEMBL::DBSQL::BaseAdaptor;
 use Bio::EnsEMBL::Utils::Argument qw(rearrange);
 use Bio::EnsEMBL::Utils::Exception qw(throw warning);
 
-our @ISA = qw(Bio::EnsEMBL::DBSQL::BaseAdaptor);
+use base ('Bio::EnsEMBL::DBSQL::BaseAdaptor');
+
 
 sub fetch_by_dbID {
   my ($self, $data_id) = @_;

modules/Bio/EnsEMBL/Hive/DBSQL/DBAdaptor.pm

@@ -35,13 +35,10 @@ Bio::EnsEMBL::Hive::DBSQL::DBAdaptor
 
 package Bio::EnsEMBL::Hive::DBSQL::DBAdaptor;
 
-use vars qw(@ISA);
 use strict;
-
 use Bio::EnsEMBL::DBSQL::DBConnection;
-use Bio::EnsEMBL::DBSQL::DBAdaptor;
 
-@ISA = qw( Bio::EnsEMBL::DBSQL::DBAdaptor );
+use base ('Bio::EnsEMBL::DBSQL::DBAdaptor');
 
 
 sub get_Queen {

modules/Bio/EnsEMBL/Hive/Meadow/LOCAL.pm

@@ -5,7 +5,7 @@ package Bio::EnsEMBL::Hive::Meadow::LOCAL;
 use strict;
 use Sys::Hostname;
 
-use base 'Bio::EnsEMBL::Hive::Meadow';
+use base ('Bio::EnsEMBL::Hive::Meadow');
 
 sub get_current_worker_process_id {
     my ($self) = @_;

modules/Bio/EnsEMBL/Hive/Meadow/LSF.pm

@@ -4,7 +4,7 @@ package Bio::EnsEMBL::Hive::Meadow::LSF;
 
 use strict;
 
-use base 'Bio::EnsEMBL::Hive::Meadow';
+use base ('Bio::EnsEMBL::Hive::Meadow');
 
 sub get_current_worker_process_id {
     my ($self) = @_;

modules/Bio/EnsEMBL/Hive/Queen.pm

@@ -61,16 +61,15 @@ package Bio::EnsEMBL::Hive::Queen;
 
 use strict;
 use POSIX;
+use Sys::Hostname;
 use Bio::EnsEMBL::Utils::Argument;
 use Bio::EnsEMBL::Utils::Exception;
 
 use Bio::EnsEMBL::Hive::Worker;
-use Bio::EnsEMBL::DBSQL::BaseAdaptor;
-use Sys::Hostname;
 use Bio::EnsEMBL::Hive::DBSQL::AnalysisCtrlRuleAdaptor;
 
+use base ('Bio::EnsEMBL::DBSQL::BaseAdaptor');
 
-our @ISA = qw(Bio::EnsEMBL::DBSQL::BaseAdaptor);
 
 ############################
 #