The article says it is named AppSupport for Linux Platforms and Sailfish Community News, 12th August calls it Android App Support. (Some IRC meetings back i recall someone was corrected from calling it AlienDalvik)
It is well-known that Jolla has done most of the work on it in-house lately, but whether or not it is based on Myriad technology to any extent and if that then was bought out is somewhat foggy.
That community news article also mentions they recruited the creator of sfdroid, which to me sounds like yet another hint to that it was (mostly) from scratch.