Make clean target is removing files generated as part of tarball release

[Tyler Hicks]

The AppArmor make clean target is removing files that were generated as part of the tarball release process.

Run the attached aa-make-clean.sh script and check the diffstat output.

$ ~/aa-make-clean.sh
make[1]: *** No rule to make target 'clean'. Stop.
find: ‘simple_tests/generated_dbus’: No such file or directory
Makefile:153:
 ************************************************************************
 No dbus pkg-config skipping dbus_eavesdrop dbus_message dbus_services tests ...
 Install libdbus-1-dev or equivalent package to build and run these tests
 ************************************************************************

 50 files changed, 10897 deletions(-)

It should show that no files are changed.