Author: Mikhail Golenkov
MDL-67211 Tasks: Record when a task is running.
Co-authored-by: Sam Marshall <s.marshall@open.ac.uk>
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b465a541ae8441abb10880cd4b704701824ba888
http://github.com/moodle/moodle/commit/b465a541ae8441abb10880cd4b704701824ba888
+ 4.0 en [hostname,tool_task]
+ 4.0 en [pid,tool_task]