(Recalled a joke video): Yes, tell everybody and demand at least $200k: employers should be chasing you in flocks: http://vooza.com/videos/the-perfect-engineer/!
On a more serious note, it's a very good and non-trivial question.
I'd say - no, don'tdon't tell. Maybe tell how it works, don't tell how it's called. Tell them what to expect of you and what special requirements you have if you have any - in simple words without mentioning the diagnosis.
Motivation:
- Managers tend to avoid the risks and will pass on you
Your potential employers are not all M.D.'s and diagnosis (implications of which are not obvious to them cause they're not M.D.'s) might scare them off.
Considering the fact that managers tend to avoid taking unnecessary risks and making tough decisions (to keep their names in black), they might prefer to stay safe and pass on you, rather than take responsibility for hiring you and potentially bearing the stigma of being "Boris, who hired that misbehaving Ewakunnale" (or who knows how they might imagine people with Asperger's, again, they are not M.D.'s).
- "There is no such thing as "healthy" person - there are only undiagnosed"
God knows, how many people have ADHD or CDD that affect their performance greatly, but they've never been diagnosed. I believe it would've been way harder for them to find a job, if they started including the diagnosis into their resumes.
You know, we all have some alterations from norm which results in a bunch of diagnoses (don't trust me? go do your genotyping - you'll have a bunch), so if everyone included every diagnose we have into our resumes, we would've all been unemployed or underpaid - so don't feel guilty.
- Don't expose your downsides in the first place while looking for a job (unless ...)
Generally, if I feel bad about something in my resume, I never lie about that if asked, but I don't bring that up for discussion myself - unless it's something critical for performance - e.g. if I missed a leg, I would've mentioned that, cause it will become apparent anyways in the first workday.
So, if you feel like your condition makes you really hard to manage or forces you to miss the deadlines or something - I'd explain how it works, but still wouldn't mention the diagnosis.