8001049: VM crashes when running with large -Xms and not specifying ObjectAlignmentInBytes

Take the initial heap size into account when checking the heap size for compressed oops

Reviewed-by: jmasa, kvn, hseigel, ctornqvi

hotspot/src/share/vm/runtime/arguments.hpp

@@ -309,6 +309,7 @@ class Arguments : AllStatic {
   // Garbage-First (UseG1GC)
   static void set_g1_gc_flags();
   // GC ergonomics
+  static void set_use_compressed_oops();
   static void set_ergonomics_flags();
   static void set_shared_spaces_flags();
   // Setup heap size