store and retrieve hive_meta.'hive_use_param_stack'

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

@@ -143,6 +143,17 @@ sub hive_use_triggers {  # getter only, not setter
 }
 
 
+sub hive_use_param_stack {  # getter only, not setter
+    my $self = shift @_;
+
+    unless( defined($self->{'_hive_use_param_stack'}) ) {
+        my $hive_use_param_stack = $self->get_MetaAdaptor->fetch_value_by_key( 'hive_use_param_stack' );
+        $self->{'_hive_use_param_stack'} = $hive_use_param_stack || 0;
+    } 
+    return $self->{'_hive_use_param_stack'};
+}
+
+
 sub get_available_adaptors {
  
     my %pairs =  (

modules/Bio/EnsEMBL/Hive/PipeConfig/HiveGeneric_conf.pm

@@ -98,6 +98,7 @@ sub default_options {
         'pipeline_name'         => 'hive_generic',
 
         'hive_use_triggers'     => 0,                   # there have been a few cases of big pipelines misbehaving with triggers on, let's keep the default off.
+        'hive_use_param_stack'  => 0,                   # do not reconstruct the calling stack of parameters by default (yet)
         'hive_force_init'       => 0,                   # setting it to 1 will drop the database prior to creation (use with care!)
 
         'pipeline_db'   => {
@@ -219,6 +220,7 @@ sub hive_meta_table {
     return {
         'hive_sql_schema_version'   => Bio::EnsEMBL::Hive::DBSQL::SqlSchemaAdaptor->get_code_sql_schema_version(),
         'hive_pipeline_name'        => $self->o('pipeline_name'),
+        'hive_use_param_stack'      => $self->o('hive_use_param_stack'),
     };
 }