media-tv/gentoo-vdr-scripts: bump to 2.8

media-tv/gentoo-vdr-scripts: bump to 2.8

this bump will fix:
SYMLINK_LIB=no / 17.1 profiles break VDR plugins
fails to shutdown pc for sleep
shuts the vdr down even if nvram-wakup fails
disabled login for user vdr
ebuild cleanup
cleanup old

Bug: https://bugs.gentoo.org/688174
Bug: https://bugs.gentoo.org/646518
Bug: https://bugs.gentoo.org/298785
Closes: https://bugs.gentoo.org/688174
Closes: https://bugs.gentoo.org/646518
Closes: https://bugs.gentoo.org/298785
Package-Manager: Portage-2.3.81, Repoman-2.3.18
Signed-off-by: Joerg Bornkessel <hd_brummy@gentoo.org>