Makefile: clean up the test program binaries

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kdbus, portal: fix list_add_tail() parameters

I got them backwards, stupid...

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
portal_test: start reading from a portal

need to make this use the ioctl soon

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>