Log Message:
Update cad/eagle to 4.11, from Ossi Herrala in PR pkg/24552.

Changes:

Library Management

    * Packages and Device Sets can now be copied into the currently
      edited library from other libraries, either through Drag&Drop from
      the Control Panel or by using the COPY command's new extended syntax
      (see "Help Copy").
    * New package variants can now be created by directly using packages
      from other libraries, either through Drag&Drop from the Control Panel
      or by using the PACKAGE command's new extended syntax.
    * The packages of the currently edited library can now be updated with
      those from other libraries, either through Drag&Drop from the Control
      Panel or by using the UPDATE command's new extended syntax.

And more! please review this link to see a full list of changes:
http://www.cadsoft.de/version41.htm