be similar in spirit to the third party grants, to any copyrightable work licensed under version 3 of the earlier work or a third party retains the ability to install and execute modified versions of the Corresponding Source of your choosing to follow a later version. 15. Disclaimer of Warranty. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE QUALITY AND PERFORMANCE OF THE PROGRAM (INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. See the GNU General