You can use that term to describe the game without being officially sanctioned. Usually the Remaster term is applied to a specific version of a game, when porting to new systems (even PC to PC) with additional features and fixes in example. And as this is the source code of the game, usually the term Remaster is not used. But for the PC recompiled build, the term would be perfectly fitting to describe it compared to official released games.
You can use that term to describe the game without being officially sanctioned. Usually the Remaster term is applied to a specific version of a game, when porting to new systems (even PC to PC) with additional features and fixes in example. And as this is the source code of the game, usually the term Remaster is not used. But for the PC recompiled build, the term would be perfectly fitting to describe it compared to official released games.
recompilation is more descriptive of what they’re actually doing.
Both terms are not exclusive. A Remaster can be a recompilation and in most cases it is.