I found it from UfoAi's forums. A
Actually, they had a link to another XCom remake -- a closed source, windows-only remake. From there, I found this one.
Ya know, with all the love of Xcom, ya think someone would make a "dos-mode" bugfix release, combined with a preset/customized emulator, that could be easily installed on any modern system. We see that in video games all the time, so ...
(I know, it can be done manually. I've done that myself. But it's time consuming, error prone, and learning the proper way to use the two different programs that patch xcom -- and one apparently only patches the window's version -- is a very high bar of entry).