* lib/thwait.rb (ThreadsWait#join): refined rdoc again.
	  [ruby-core:29863] [ruby-dev:41092]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@28216 b2dd03c8-39d4-4d8f-98ff-823fe69b080e