Add new lens: Lumix G Vario 12-32mm F3.5-5.6 Asph. Mega OIS.

git-svn-id: svn://dev.exiv2.org/svn@3229 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
Update lens list to match ExifTool version 9.46.

git-svn-id: svn://dev.exiv2.org/svn@3230 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3