appctl

This release fixes a problem on Linux where multiple processes are running for a single handler.

This release mainly brings new features. It adds extension points to hook your own extensions into the process of ctl in order to perform custom actions.
The documentation has been updated accordingly.

This release fixes the Linux status message printout where the PID was omitted from the printout. This does not affect the functionality at all; only the output text has been fixed.

A PRIORITY variable has been added that allows definition of process priority. This parameter can be set in ctlenv (globally for all handlers), as well as handler-env files for a specific handler only.

The recently introduced feature to allow custom PIDFILE location specification was not working properly when multiple handlers were specified in ctlenv. All PIDs were redirected to the PID file of the first handler, which caused messages about invalid PIDs for this handler. Since no PID files were written for other handlers, they were treated as handlers without PID files (PIDLESS_MODE). In most cases this was not creating any problems except for the ugly warnings about wrong PIDs.