[feat] MultiSemiSpace heapscheme fix

Use with `mx image @sss`

Author: zakkak

com.oracle.max.vm.tests/src/com/oracle/max/vm/tests/vm/MaxineTesterConfiguration.java

@@ -389,6 +389,8 @@ public int compare(Class o1, Class o2) {
         imageConfig("gssd", opt_c1x, "-run=java", "-heap=sequential.gen.semiSpace", "-build=DEBUG");
         imageConfig("ss", opt_c1x, "-run=java", "-heap=sequential.semiSpace");
         imageConfig("ssd", opt_c1x, "-run=java", "-heap=sequential.semiSpace", "-build=DEBUG");
+        imageConfig("sss", opt_c1x, "-run=java", "-heap=sequential.multiSemiSpace");
+        imageConfig("sssd", opt_c1x, "-run=java", "-heap=sequential.multiSemiSpace", "-build=DEBUG");
         imageConfig("ms", opt_c1x, "-run=java", "-heap=gcx.ms");
         imageConfig("msd", opt_c1x, "-run=java", "-heap=gcx.ms", "-build=DEBUG");
         imageConfig("msed", opt_c1x, "-run=java", "-heap=gcx.mse", "-build=DEBUG");