Added explicit engine settings for possible foreign key errors?
Fixed deprecated timer call.
Iterate over Immutable Cloned Map of jobs for thread safety.

Added db type differentiation for storage engines.
Fixed invalid foreign key entries for database schema.
Fixed path separator and added some directory traversal sanitization.
Updated Bukkit dependency to 1.5.2-R0.1.
Merge pull request #3 from krinsdeath/master

updating fork from master