Added column for parameters
Added annotations
Added lock information
Add support for black and white list of jobs to run

This enables you to run multiple scheduler jobs in parallel, and have e.g designated cron job for some scheduler job.
fix warning about array passed to substring

Fix warning thrown when empty array is passed as "messages"
to sheduler.
"Warning: substr() expects parameter 1 to be string,
array given in Observer.php on line 87"
extend cronjob config with the configurable ones
Merge branch 'master' of github.com:AOEmedia/Aoe_Scheduler into master-new

# By Fabrizio Branca (3) and others
# Via Daniel Zohm
* 'master' of github.com:AOEmedia/Aoe_Scheduler:
  extend cronjob config with the configurable ones
  fix warning about array passed to substring
  Add support for black and white list of jobs to run
  Added lock information
  Added annotations
  Added column for parameters

Conflicts:
	app/code/community/Aoe/Scheduler/Model/Observer.php
	app/code/community/Aoe/Scheduler/Model/Schedule.php
	app/code/community/Aoe/Scheduler/etc/config.xml