8347831: Re-examine version check when cross linking

Co-authored-by: Magnus Ihse Bursie <ihse@openjdk.org>
Reviewed-by: erikj, alanb

make/modules/java.base/Java.gmk

@@ -34,7 +34,7 @@
 DOCLINT += -Xdoclint:all/protected \
     '-Xdoclint/package:java.*,javax.*'
 JAVAC_FLAGS += -XDstringConcat=inline
-COPY += .icu .dat .spp .nrm content-types.properties \
+COPY += .icu .dat .spp .nrm .txt content-types.properties \
     hijrah-config-Hijrah-umalqura_islamic-umalqura.properties
 CLEAN += intrinsic.properties