parallel.rb: do not split messages

* test/lib/test/unit/parallel.rb (Test::Unit::Worker#_run_suite):
  get rid of splitting leak checking messages.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46180 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/lib/test/unit/parallel.rb

@@ -35,7 +35,8 @@ module Test
 
         th = Thread.new do
           begin
-            while buf = (self.verbose ? i.gets : i.read(5))
+            while buf = (self.verbose ? i.gets : (i.readpartial(1024) || i.read(5)))
+              buf.sub!(/\A\n?\.+(?!\z)/, '')
               _report "p", buf
             end
           rescue IOError