Patch 1.24

PC WORLD EDITOR CHANGES

- Added new JASS hash table functions to replace the lost functionality from 
   fixing unsafe type casting.
   - Hash Table - Save Item Handle
   - Hash Table - Save Unit Handle
   - ...
   - Hash Table - Load Item Handle
   - Hash Table - Load Unit Handle
   - ...
   - Hash Table - Get Handle ID

FIXES

- Fixed an exploit related to unsafe type casting that allowed users to 
   execute arbitrary code in maps.
- Fixed the JASS unsafe type casting exploit ("return bug").
- Fixed several World Editor crashes.