perl-OLE-Storage_Lite: rename attribute name

The attribute name now corresponds to what `nix-generate-from-cpan`
expects. Kept old attribute name for backwards compatibility.

Also added meta section.

pkgs/top-level/perl-packages.nix

···
     };
   };
 
-  OLEStorageLight = buildPerlPackage rec {
+  # For backwards compatibility. Please use OLEStorage_Lite instead.
+  OLEStorageLight = OLEStorage_Lite;
+
+  OLEStorage_Lite = buildPerlPackage rec {
     name = "OLE-Storage_Lite-0.19";
     src = fetchurl {
       url = "mirror://cpan/authors/id/J/JM/JMCNAMARA/${name}.tar.gz";
       sha256 = "179cxwqxb0f9dpx8954nvwjmggxxi5ndnang41yav1dx6mf0abp7";
+    };
+    meta = {
+      description = "Read and write OLE storage files";
+      license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
     };
   };