luna-sysmgr: Finish porting recipe to OE-core
luna-sysmgr: Finish porting recipe to OE-core

- luna-sysmgr's upstart conf expects to have ionice available. Under
  OE-core, this is supplied by util-linux => add it to RDEPENDS.
- Add inherit webos_system_bus and comment out inherit webos_component
  so that service and role files are installed.
- Change DESCRIPTION to match the Summary from README.md .
- Use double-quotes on the RHS of variable assignments.
- Put the assignments in the preferred order.
- Convert commented out Python statements into the equivalent shell
  commands (still commented out).
- Only launch "make distclean" if there's a Makefile present.
- Remove an incorrect DEPENDS on nyx-modules. luna-sysmgr doesn't need
  nyx-modules to build; it only needs nyx-lib to build. It does need
  nyx-modules to be present to run, but so does every user of nyx-lib
  => nyx-modules needs to be added to nyx-lib's RDEPENDS (coming soon
  in a separate commit).

Open-webOS-DCO-1.0-Signed-off-by: Herb Kuta <herb.kuta@palm.com>
Change-Id: I6bbdd358f3df1d833dab94f07527dd1e397ddd3f

openwebos/meta-webos,openwebos/meta-webos,Garfonso/meta-webos-ports,openwebos/meta-webos,openwebos/meta-webos,nizovn/meta-webos-ports,Garfonso/meta-webos-ports,nizovn/meta-webos-ports