Merge branch 'save-commit-hash' into 'pregmod-master'

Show the saves commit hash if it exists

See merge request !12204

src/js/main.js

@@ -134,7 +134,7 @@ App.MainView.full = function() {
 		if (V.releaseID >= 1000 || ["0.9", "0.8", "0.7", "0.6"].includes(V.ver)) {
 			if (V.releaseID < App.Version.release) {
 				newError().append(App.UI.DOM.makeElement("span", "INCOMPATIBILITY WARNING:", "major-warning"),
-					` Your saved game was created using version: ${V.ver}, release: ${V.releaseID}. You must run `,
+					` Your saved game was created using version: ${V.ver}, release: ${V.releaseID}${("commitHash" in V && V.commitHash !== "") ? `, commit ${V.commitHash}` : ""}. You must run `,
 					App.UI.DOM.passageLink("Backwards Compatibility", "Backwards Compatibility"));
 			}
 		} else {