* vm_dump.c (rb_vm_bugreport): limit class name length.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40890 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* vm_dump.c (rb_vm_bugreport): show name of class and module.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40891 b2dd03c8-39d4-4d8f-98ff-823fe69b080e