* ext/objspace/objspace.c: [DOC] Cleaned up many rdoc formatting
  issues and several duplicate grammar bugs.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43099 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/delegate.rb: Add SynchronizedDelegator to provide a wrapper
  for thread-unsafe data structures and objects.
* test/test_delegate.rb: Tests for SynchronizedDelegator.