bugfix: when using more than one standalone worker make sure their /tmp directories do not clash

The worker_temp_directory for standalone workers was set to
/tmp/worker_${USER}.standalone. If two standalone workers were running
on the machine, they could overwrite each other’s files.
The fix include the process ID ($$ in Perl) in the directory name.

cosmetic: added deprecated message to CreateNewJob() and some documentation to store_jobs_and_adjust_counters()

store_jobs_and_adjust_counters() now also deals with semaphore_count corrections. It is now the preferred job-creation interface.

bugfix: no hope for other DBD drivers to support detection of auto-incrementing fields => use our inernal fixed rule

bugfix: stop printing overflow-related debug output to STDOUT; interface with overflow adaptor simplified

bugfix: substituting --password for --pass to pacify mysql 5.5.34+ that no longer recognizes options by their prefix

drop fetch_all_by_from_analysis_id_and_branch_code() method and rely on AUTOLOADed BaseAdaptor's methods instead

If greedy disoriented Workers overshoot analysis_capacity|hive_capacity, make sure they respecialize after the first batch

Individual Worker's specialization is now routed through Scheduler's main subroutine, to enforce more checks