8252114: Windows-AArch64: Enable and test ZGC and ShenandoahGC

Reviewed-by: shade, stefank, rkennke

Author: Monica Beckwith

make/autoconf/jvm-features.m4

@@ -395,8 +395,14 @@ AC_DEFUN_ONCE([JVM_FEATURES_CHECK_ZGC],
         AC_MSG_RESULT([no, $OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU])
         AVAILABLE=false
       fi
-    elif test "x$OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU" = "xlinux-aarch64"; then
-      AC_MSG_RESULT([yes])
+    elif test "x$OPENJDK_TARGET_CPU" = "xaarch64"; then
+      if test "x$OPENJDK_TARGET_OS" = "xlinux" || \
+          test "x$OPENJDK_TARGET_OS" = "xwindows"; then
+        AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no, $OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU])
+        AVAILABLE=false
+      fi
     else
       AC_MSG_RESULT([no, $OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU])
       AVAILABLE=false