v1.7.7

- grub: fix init bootargs in netinstall configs
- grub: change console=ttyS0 and console=tty0 places
- live-install: update use/live-install/desktop
- 50-e2k-write.sh: use bash (thanks mike@)
- remove use/stage2/net-eth, +net-eth everything
- features.in: remove feature memclean
- create /etc/ld.so.cache and update mtime instead adding livecd-no-ldconfig
- e2k: use RESCUE_BOOTARGS for rescue instead of STAGE2_BOOTARGS
- repo: proxy variables for main repo
- lib/profile.mk: set BRANCH in distcfg
- kernel, stage2: add drivers/power/supply directory to initrd (for SBC)
- uboot: do not set console=tty0, when is not set in BASE_BOOTARGS
- tar2fs: copying dtb in chroots
- arm-rpi4: do not copy missing dtb's from raspberrypi-firmware
- plymouth: add SPLASH_ARGS to be able to override