systemd: do not recommend udev-extraconf for udev

* adding this extra functionality is an image- or distro-decision
* at least automount-rule/script breaks other automount solutions causing
  misleading kernel messages as 'VFS: could not find a valid V7 on sda'

same as already sent by Koen Kooi [1]

[1] http://patches.openembedded.org/patch/48139/

(From OE-Core rev: 860cd2f9ba5803824ab59bf9c0e84b83f7907dc1)

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 234e671f704c3ff780494731c70b3a00add4d24a)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
systemd-systemctl: parse unit files more correctly

Old script failed to parse unit files containing comments like

| #Alias=some-alias

or whitespaces like

| WantedBy = foo

correctly.  Patch changes script to interpret keywords only when they
are at the beginning of a line and ignores whitespaces before the '='.

(From OE-Core rev: 443e75ee2c0e9a62df997aef24855bce54d39177)

Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 999302e9d87aee2fe5f171995ee33118e8b30f8c)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>