There are some links that goes to Teamcity bigbluecup, it looks like it is/was a pipeline part to build binaries. Is this still online? Are the scripts for build there public in any place?
You need to contact Nick Sonneveld, he was the person who maintained it, but once he left everything broke.
His profile on these forums: http://www.adventuregamestudio.co.uk/forums/index.php?action=profile;u=13138
His github account: https://github.com/sonneveld
Sent him a tweet! :D