documentation overhaul (#353)

* ident
* remove $Id$ tags from rcs software which has been retired
* make an effort to sync required mib docs with actual code
* sync even more docs with what code actually does
* some whitespace nits
* fixup example to use snmpv2 for all but the most ancient devices
* remove blurb to find more specific snmp::info classes for classes
  which alrdy are as specific as they can get (eg snmp::info::layer3::vmware
  doesn't need info on to find a specific module since there ain't none)
* rename all sub {vendor} strings to lowercase vendor, if cisco, juniper
  and arista can be lowercase, so can be all the rest.
* fix tests
* spread some use warnings around
* use $ instead of @
* remove defines that are included via parent classes
* use strict + warnings
* remove alrdy included modules
* add comma after last list item
* typos
* mibs are found in our mib repo, not on the cisco site
* documentation fixes

lib/SNMP/Info/Layer3/Lantronix.pm

@@ -1,5 +1,4 @@
 # SNMP::Info::Layer3::Lantronix
-# $Id$
 #
 # Copyright (c) 2012 J R Binks
 #
@@ -30,6 +29,7 @@
 package SNMP::Info::Layer3::Lantronix;
 
 use strict;
+use warnings;
 use Exporter;
 use SNMP::Info::Layer3;
 
@@ -74,13 +74,14 @@ sub vendor {
 sub os {
     my $device = shift;
     my $descr = $device->description() || '';
-    my $os;
 
     # On EDS, it is called the "Evolution OS"
     # Not sure what, if any, name it has a name on other products
-    $os = 'EvolutionOS' if ( $descr =~ m/Lantronix EDS\w+ V([\d\.R]+)/ );
-
-    return 'LantronixOS';
+    if ( $descr =~ m/Lantronix EDS\w+ V([\d\.R]+)/ ) {
+      return 'EvolutionOS';
+    } else {
+      return 'LantronixOS';
+    }
 }
 
 sub os_ver {
@@ -213,7 +214,7 @@ Returns 'lantronix'.
 
 =item $device->os()
 
-Returns 'EvolutionOS' for EDS devices.
+Returns 'EvolutionOS' for EDS devices, else returns 'LantronixOS'.
 
 =item $device->os_ver()
 
@@ -246,16 +247,6 @@ See documentation in L<SNMP::Info::Layer3/"GLOBALS"> for details.
 These are methods that return tables of information in the form of a reference
 to a hash.
 
-=head2 Overrides
-
-=over
-
-=item $device->i_ignore()
-
-Returns reference to hash.  Increments value of IID if port is to be ignored.
-
-=back
-
 =head2 Lantronix specific items
 
 None at present.