Bug#863801: grub-coreboot: fails to upgrade from jessie to stretch if init-select was installed

[Andreas Beckmann]

Hi,

I've now filed a jessie-pu request (#866643) for init-select, with 

  ... $(if [ -x /usr/lib/init-select/get-init ]; then /usr/lib/init-select/get-init; fi)

Given that init-select has now been removed from sid, you don't
have to care too much about messing around with init-select.cfg,
you could even take it over by shipping a dummy one (in grub-common?,
together with unversioned Breaks+Replaces: init-select)
for stretch+buster, and finally remove it for buster+1.

(Theoretically you should also be able to
'dpkg-maintscript-helper rm_conffile' a conffile owned by another
package, but with init-select being removed instead of upgraded that
would likely not make dpkg forget that init-select owns that file
and a future reintroduction of init-select could make dpkg honor the 
"local deletion" of the conffile. Taking it back from grub-common
should work as intended.)

Andreas