GPL-2-only packages using GPL-3+ readline

[Bastian Germann <bastiangermann@fishpost.de>]

Hi,

There are some packages with GPL-2-only licensed binaries that link with 
GPL-3+ licensed libreadline.so.8. I do not know Debian-legal's current 
interpretation on that matter. The FSF is on the position that a 
derivative work of a GPL-3 work cannot be GPL-2-only licensed:
https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility

The packages in question are the following:

abook
bluez
connman
devtodo
maxima
nftables

atari800 (see #977654)
avrdude
ctsim
ferret-vis
grads
jackd2
multipath-tools
omake
teg

All packages compile with replacing build-dependency libreadline-dev 
with the orphaned libreadline-gplv2-dev. The second group can also 
build-depend on libeditreadline-dev instead, which links with libedit.
Both replacements would heal the license issue.

Thanks for your comments,
Bastian