this reverts commit 0cef87ffca though
retaining the 'advanced options' menu entry using a label rather than a
title.
despite having done a lot of testing back in 2015 with my bootloader
improvements, i notice now that in fact the syslinux caret fix has an
undesired side effect of modifying the title displayed above the menus. it
does not help that the text embedded into the splash overlaps with this
menu title; perhaps this explains why i missed this problem back in 2015.
purely reverting the implemented fix solves this title problem, but
restores the caret problem to the advanced options menu (in menu.cfg);
however that menu was using a caret in a title entry, unlike everywhere
else where they are only used with labels, which must have been the
original source of the problem all along. ensuring that this menu uses a
label instead of a title in this reversion leaves everything working
correctly afaict.
Gbp-Dch: Ignore
LB_DEBIAN_INSTALLER_GUI defines whether or not to provide the graphical
installer. the installer_debian-installer script pays attention to it and
does not download it if not wanted. the actual bootloaders however
(both grub2/loopback and syslinux) ignore it, which leaves broken and
unwanted menu entries. this fixes that.
Gbp-Dch: Short
Closes: #952890
Lyndon Brown