metomi/rose#365: fix status lines bug
rose app/task-run: builtin applications.

Builtin task utilities are now called builtin applications.
Introduce the `app=KEY` setting to `rose-app.conf` to specify a builtin
application instead of running a command.
Merge pull request #393 from benfitzpatrick/365.rosie-deleted-crash

#365: fix status lines bug
Noted fix fpr deleted suite crash bug.
Merge branch 'master' into 383.rose-app-run.builtin
Merge branch '383.rose-app-run.builtin' of github.com:matthewrmshin/rose into 383.rose-app-run.builtin

Conflicts:
	bin/rose-app-run
	doc/rose-command.html
	doc/rose-configuration.html
	doc/rose-rug-suite-tools.html
	lib/python/rose/apps/rose_install.py
	lib/python/rose/run.py