Refactor CDS disabling

Author: Vladimir Kempik

make/autoconf/jvm-features.m4

@@ -264,13 +264,13 @@ AC_DEFUN_ONCE([JVM_FEATURES_CHECK_CDS],
 [
   JVM_FEATURES_CHECK_AVAILABILITY(cds, [
     AC_MSG_CHECKING([if platform is supported by CDS])
-    if test "x$OPENJDK_TARGET_OS" != xaix && \
-        !( test "x$OPENJDK_TARGET_OS" = "xmacosx" && \
+    if test "x$OPENJDK_TARGET_OS" = xaix || \
+        ( test "x$OPENJDK_TARGET_OS" = "xmacosx" && \
         test "x$OPENJDK_TARGET_CPU" = "xaarch64" ) ; then
-      AC_MSG_RESULT([yes])
-    else
-      AC_MSG_RESULT([no, $OPENJDK_TARGET_OS])
+      AC_MSG_RESULT([no, $OPENJDK_TARGET_OS-$OPENJDK_TARGET_CPU])
       AVAILABLE=false
+    else
+      AC_MSG_RESULT([yes])
     fi
   ])
 ])