The scaiedit31.zip file you have requested: Tools and Utilities / ScAIEdit 3.1 - 2.35mb is not available. Perhaps try browsing all files for the game StarCraft and upload any files you want to share or are missing. This is the only information we could locate:
Here's the integer values corresponding to the StarCraft names. Use this to help you to create your own unitdef.ini correctly. Please follow the steps described in the Help File on the document "Total Conversion Support" of the section "Advanced Topi Editor that allows you to edit the computer AI scripts in Starcraft.