Merge pull request #92 from ruby/sync-excludes-mmtk

Sync test/.excludes-mmtk

Author: peterzhu2118

test/.excludes-mmtk/TestObjSpace.rb

@@ -2,3 +2,4 @@
 exclude(:test_dump_flag_age, "testing behaviour specific to default GC")
 exclude(:test_dump_flags, "testing behaviour specific to default GC")
 exclude(:test_dump_objects_dumps_page_slot_sizes, "testing behaviour specific to default GC")
+exclude(:test_trace_object_allocations_does_not_reuse_freed_allocation_info, "hang up")