archive-release: Adjust local.conf.sample for MEL Lite.

Set the EXTERNAL_TOOLCHAIN_PATH properly for MEL Lite installs.

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
bluez5: Force obex.service in /usr/lib

Upstream bluez installs the obex.service file into /usr/lib
regardless of the multilib settings as does the current systemd
recipe.  Make sure it gets packaged properly.

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
gstreamer: Force bluez packageconfig to use virtual/libbluetooth.

For the meta-mentor layer, bluez4 is blacklisted by
    meta-mel/conf/blocks/bluetooth.conf
Adjust the packageconfig for gstreamer1.0-plugins-bad
to build with virtual/libbluetooth.

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>