webos-image: luna-service2=148

Includes the following changes:

  962f0b9 Fix crash in possible error situation in _LSTransportClientNew
  c40bfd9 Use mkstemp instead of mktemp in ls-hubd
  9a18f7b Add unit tests for libluna-service2
  8f4ddfc Change unit-tests to compile standalone
  837a076 Fix to build when WEBOS_TARGET_MACHINE_IMPL is "hardware"
  8bbbfed libluna-service2: link explicitly with librt

Open-webOS-DCO-1.0-Signed-off-by: Keith Derrick <keith.derrick@palm.com>
Change-Id: Ie1a50411b56c62b6aac72d3c5176186bb756047c
Reviewed-on: http://g2g.palm.com/1491
Reviewed-by: Herb Kuta <herb.kuta@palm.com>
Tested-by: Herb Kuta <herb.kuta@palm.com>