Ruby » Ruby master

• load.c (load_unlock): release loading barrier and then remove it
  from loading_table if it is not in-use. [Bug #5754]
• thread.c (rb_barrier_release, rb_barrier_destroy): return
  whether any other threads are waiting on it.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34039 b2dd03c8-39d4-4d8f-98ff-823fe69b080e