I think you should just update it as direct upgrade to existing dosbox (aka, version bump, maemoX), as it fix issues (mouse out-of-boundaries things), have optimizations that make it run faster on our hardware, etc.

Why the hell should we, all of sudden, gets some other version of dosbox in repos, possibly confusing future users, and denying current ones of auto-update? -devel is just for that what you were doing by providing forum-attachment .debs. Your latest build if of -testing quality already, if not extras one.

Just push it to damn repos, I say

/Estel