Allocate HULK stack region from HELLO, translate memory region types

Rsconscript

@@ -23,12 +23,12 @@ class HulkBinObj < Builder
     File.write(@target, <<EOF)
 .section ".rodata"
 .balign 4096
-.global hulk_bin_start
-hulk_bin_start:
+.global _hulk_bin_start
+_hulk_bin_start:
 .incbin "#{@sources.first}"
 .balign 4096
-.global hulk_bin_end
-hulk_bin_end:
+.global _hulk_bin_end
+_hulk_bin_end:
 EOF
     unless @cache.up_to_date?(@target, nil, @sources, @env)
       print_run_message("Creating HULK binary object <target>#{@target}<reset>", nil)