#297 perl 5.28 removal of "use vars"

also adds pod for Layer3::DLink::interfaces

lib/SNMP/Info/Layer3/Altiga.pm

@@ -37,8 +37,8 @@ use SNMP::Info::Layer3;
 @SNMP::Info::Layer3::Altiga::ISA = qw/SNMP::Info::Layer3 Exporter/;
 @SNMP::Info::Layer3::Altiga::EXPORT_OK = qw//;
 
-our ($VERSION %GLOBALS %MIBS %FUNCS %MUNGE
-            $int_include_vpn $fake_idx $type_class/;
+our ($VERSION, %GLOBALS, %MIBS, %FUNCS, %MUNGE,
+            $int_include_vpn, $fake_idx, $type_class);
 
 $VERSION = '3.66';