adding ability to intersperse commands with rsync backup jobs via backup_exec config resource
Adding documentation and tests to support the new resource "backup_exec".
Fixed test so that it actually works and ensures passing and failing behavior.
Merge branch 'master' into backup_exec
Merge branch 'master' into backup_exec
restructure of backup_exec tests.  also some small fixes for rsnapshot.
Merge branch 'backup_exec' of github.com:DrHyde/rsnapshot into backup_exec
Merge branch 'master' into backup_exec

Conflicts:
	ChangeLog