Bug 28750: (bug 17600 follow-up) Use full path for subroutines

Throughout the file we call methods with the module
Following suit rather than importing the methods

To test:
1 - Attempt to load advanced cataloging editor
2 - it fails
3 - http://localhost:8081/cgi-bin/koha/svc/cataloguing/framework?frameworkcode=&callback=define
4 - Undefined subroutine &CGI::Compile::ROOT::kohadevbox_koha_svc_cataloguing_framework::GetMarcStructure called at /kohadevbox/koha/svc/cataloguing/framework line 18
5 - Apply patch
6 - Cataloging editor loads!
7 - Link in #3 loads!

Signed-off-by: David Nind <david@davidnind.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

svc/cataloguing/framework

@@ -15,7 +15,7 @@ my ( $query, $response ) = C4::Service->init( editcatalogue => 'edit_catalogue'
 
 my $frameworkcode = $query->param( 'frameworkcode' ) // '';
 
-my $tagslib = GetMarcStructure( 1, $frameworkcode );
+my $tagslib = C4::Biblio::GetMarcStructure( 1, $frameworkcode );
 
 my @tags;
 
@@ -42,7 +42,7 @@ $authorised_values->{itemtypes} = [ $schema->resultset( "Itemtype" )->search( un
     result_class => 'DBIx::Class::ResultClass::HashRefInflator'
 } ) ];
 
-my $class_sources = GetClassSources();
+my $class_sources = C4::ClassSource::GetClassSources();
 
 my $default_source = C4::Context->preference("DefaultClassificationSource");