Ruby

• vm_backtrace.c (location_inspect_m): add
  Thread::Backtrace::Location#inspect.
  It same as loc_obj.to_s.inspect.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e