job file: append to status file.
Merge branch 'master' into job-status
Populate runtime DB with job submit method ID.

Only at, background and loadleveler at the moment.
Merge branch 'master' into job-status
job status file: add PID.
Create rundb host directory if necessary.

Closes #253. Validation of new suites (never been run yet) was failing
because the run-db host directory (default ~/cylc-run/SUITE/) did not
exist (The validation process instantiates tasks, which now results in
db creation).
Create task job log dir in the submit command.

Since moving task log dir config to the site/user file, the "cylc
submit" command (and "cylc jobscript", which wraps it) failed if
the task job log dir did not already exist.
Merge pull request #282 from matthewrmshin/job-status

Job status
Merge pull request #285 from hjoliver/274-create-task-log-dir

Create task job log dir in the submit command.
Job status file: don't start with an append.
Merge pull request #286 from matthewrmshin/job-status.new

Job status file: don't start with an append.
Merge pull request #284 from hjoliver/253-create-rundb-dir

Create rundb host directory if necessary.
One user guide typo fixed.
Merge branch 'master' into 134-multiple-inheritance