This is the original question for which I attached a 100 rep bounty.
The only person to answer it, besides me, was Timo.
I wasn't entirely happy about his answer (which is why I answered the question myself), but his answers both qualify for the bounty, and there is no one else to award it to, since I cannot award the bounty to myself. Timo deserves the bounty, and I thought it would eventually be awarded to him.
The Electrical Engineering meta was not helpful. First they told us to just wait, now they're saying that I "screwed the pooch", by changing the accepted answer (this was after the bounty period expired).
I did not know that I was supposed to do anything with those little blue flags that had "100" on them. Then I saw the flags disappear and have since learned that this is how one awards bounty.
Can some responsible person in the Stack Exchange staff fix this please? and award the bounty to Timo according to the rules?