systemd: Upgrade to 206

systemd: Upgrade to 206

Add new PACKAGE systemd-rpm-macros, this will hold
the macros which are interesting when rpm is used as
package management backend

Forward port uclibc only patches. Add a new patch
to stub out use of preadv/pwritev in testcases

Delete patches that have been merged upstream in systemd

Remove force export of GPERF variable in environment
this was causing AC_CHECK_TOOL to not populate GPERF
variable as expected

systemd needs kmod to be present on rootfs so add it
to RDEPENDS

some services substitute discovered kmod when the service
file is generated during boot, however the discovered kmod
is from native sysroot and it gets into the service file
with absolute path. So specify the target path of kmod using
KMOD variable so the unit files have correct pointer to kmod
on target

Add a patch to make sure that mknod capability is checked
before the service which excercise mknod, this patch is also
submitted to upstream systemd

(From OE-Core rev: 3f1788f8edf18a292cb5d8e16a2a98a19ec89239)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>