* ext/objspace/object_tracing.c: add new method
  ObjectSpace.trace_object_allocations_debug_start for GC debugging.
  If you encounter the BUG "... is T_NONE" (and so on) on your
  application, please try this method at the beggining of your app.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43310 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-10-17

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e