Update run-js-service for Secure Developer Mode

[GF-5198] and [GF-4978]:
* Add command-line switch to run-js-service to set node-inspector web-port
* Add default port information to help text for debugger and inspector ports
* Launch node-inspector when launching a service in debug mode using
  node-inspector.sh script in DevMode app (or node-inspector if DevMode n/a)
* Only allow debug mode to be specified for side-loaded services in
  /media/developer or /media/cryptofs if device is in Developer mode
* For system services, only allow debug mode if /var/luna/preferences/debug_system_services exists
* Remove obsolete LD_PRELOAD of (non-existent) /usr/lib/libmemcpy.so to eliminate error messages
* If cgroup/cpushareholder is not in use, provide real file to eliminate EBADF exception
* Remove jslauncher (it was only for Triton)

Open-webOS-DCO-1.0-Signed-off-by: Mark Bessey <mark.bessey@lge.com>
Open-webOS-DCO-1.0-Signed-off-by: Steve Lemke <steve.lemke@lge.com>

Change-Id: I43327e5fdbf42a0febb5543733846b29189226a7
Reviewed-on: https://g2g.palm.com/2444
Reviewed-by: Build Verification
Tested-by: Steve Lemke <steve.lemke@lge.com>
Reviewed-by: Mark Bessey <mark.bessey@lge.com>
Reviewed-by: Steve Lemke <steve.lemke@lge.com>