Allow custom scripts to be stored in a subdirectory

[BinuDR]

Hey Gemstone peeps! I was adding this feature to the Dragonrealms version of lich and happened to check Matt's github and saw this request there too. matt-lowe/Lich#23

I just submitted a PR for this change in our repo. Here's a link to it if you want to add it to your latest lich version too.

Basically it allows you to have a lich/scripts/custom directory and can run scripts from there.

dragon-realms/dr-lich#64

[OSXLich-Doug]

Thanks, @BinuDR - this will be incorporated, sometime this week if plans come about!