Customizable script to allow honor from creature kills

* See CONF section: CUSTOM SERVER OPTIONS - CREATURE HONOR
* For existing servers, please import: characters_create_creaturehonor_message.sql
* Made a change to CMakeLists.txt which allows inclusion of custom scripts. Re-run CMake if you're not starting fresh.
please add sql files with date format next time, e.g.: 2014_09_26_00_characters.sql . we'll change the date when merging.