976686, 976687: Don't execute commands with --exec by default

Contributed by Axel Beckert
Description: Don't execute commands with --exec by default
Author: Axel Beckert <abe@debian.org>
Debian-Bug: 706644
976686, 976687: add exec patch to spec file
Automatic commit of package [tpp] minor release [1.3.1-16].