CLDR-17892 Added aliases from "iso8601" to "gregorian", since "iso860…

…1" is a valid calendar ID but doesn't have

any actual associated data in CLDR.

common/main/root.xml

@@ -1936,6 +1936,32 @@ Warnings: All cp values have U+FE0F characters removed. See /annotationsDerived/
 					<alias source="locale" path="../../calendar[@type='islamic']/dateTimeFormats"/>
 				</dateTimeFormats>
 			</calendar>
+			<calendar type="iso8601">
+				<months>
+					<alias source="locale" path="../../calendar[@type='gregorian']/months"/>
+				</months>
+				<days>
+					<alias source="locale" path="../../calendar[@type='gregorian']/days"/>
+				</days>
+				<quarters>
+					<alias source="locale" path="../../calendar[@type='gregorian']/quarters"/>
+				</quarters>
+				<dayPeriods>
+					<alias source="locale" path="../../calendar[@type='gregorian']/dayPeriods"/>
+				</dayPeriods>
+				<eras>
+					<alias source="locale" path="../../calendar[@type='gregorian']/eras"/>
+				</eras>
+				<dateFormats>
+					<alias source="locale" path="../../calendar[@type='gregorian']/dateFormats"/>
+				</dateFormats>
+				<timeFormats>
+					<alias source="locale" path="../../calendar[@type='gregorian']/timeFormats"/>
+				</timeFormats>
+				<dateTimeFormats>
+					<alias source="locale" path="../../calendar[@type='gregorian']/dateTimeFormats"/>
+				</dateTimeFormats>
+			</calendar>
 			<calendar type="japanese">
 				<months>
 					<alias source="locale" path="../../calendar[@type='gregorian']/months"/>