initscripts: Sync wth OE-core

Signed-off-by: Khem Raj <raj.khem@gmail.com>
slugos: Fix mirrors to point to OE mirrors

Signed-off-by: Khem Raj <raj.khem@gmail.com>
slugos: Remove pinning for eglibc/uclibc and stop carrying arm-thumb.inc

This all works well from OE-Core now

Signed-off-by: Khem Raj <raj.khem@gmail.com>
busybox: Move bbappend to match OE-Core

Signed-off-by: Khem Raj <raj.khem@gmail.com>
udev: Make postinstall use PN override

This is the madate from OE-Core now

Signed-off-by: Khem Raj <raj.khem@gmail.com>
tasks/packagegroups: Rename tasks dir to packagegroup

Matches OE-Cores terminology
Use PN override in ALOW_EMPTY needed now in OE-Core
blkid comes from util-linux now
Update modules is gone
fsck is moved from e2fsprogs-fsck to e2fsprogs

Signed-off-by: Khem Raj <raj.khem@gmail.com>