capistrano non-parallel patch

capistrano_patch_2.5.18_no_parallel_connections_on_windows.patch

diff -rupN capistrano-2.5.18-unpatched/lib/capistrano/command.rb capistrano-2.5.18/lib/capistrano/command.rb
--- capistrano-2.5.18-unpatched/lib/capistrano/command.rb	2010-06-08 10:30:11.000000000 +0200
+++ capistrano-2.5.18/lib/capistrano/command.rb	2010-05-21 10:34:31.000000000 +0200
@@ -191,7 +191,7 @@ module Capistrano
       end
 
       def open_channels
-        sessions.map do |session|
+        sessions.compact.map do |session|
           server = session.xserver
           tree.branches_for(server).map do |branch|
             session.open_channel do |channel|
diff -rupN capistrano-2.5.18-unpatched/lib/capistrano/configuration/connections.rb capistrano-2.5.18/lib/capistrano/configuration/connections.rb
--- capistrano-2.5.18-unpatched/lib/capistrano/configuration/connections.rb	2010-06-08 10:30:11.000000000 +0200
+++ capistrano-2.5.18/lib/capistrano/configuration/connections.rb	2010-05-21 10:35:31.000000000 +0200
@@ -104,8 +104,8 @@ module Capistrano
         # each connection is done in parallel.
         connection_factory
 
-        threads = Array(servers).map { |server| establish_connection_to(server, failed_servers) }
-        threads.each { |t| t.join }
+        Array(servers).each { |server| establish_connection_to(server, failed_servers) }
+       
 
         if failed_servers.any?
           errors = failed_servers.map { |h| "#{h[:server]} (#{h[:error].class}: #{h[:error].message})" }
@@ -188,8 +188,8 @@ module Capistrano
         # prevents problems with the thread's scope seeing the wrong 'server'
         # variable if the thread just happens to take too long to start up.
         def establish_connection_to(server, failures=nil)
-          current_thread = Thread.current
-          Thread.new { safely_establish_connection_to(server, current_thread, failures) }
+          current_thread ||= Thread.current
+          safely_establish_connection_to(server, current_thread, failures)
         end
 
         def safely_establish_connection_to(server, thread, failures=nil)
diff -rupN capistrano-2.5.18-unpatched/lib/capistrano/processable.rb capistrano-2.5.18/lib/capistrano/processable.rb
--- capistrano-2.5.18-unpatched/lib/capistrano/processable.rb	2010-06-08 10:30:11.000000000 +0200
+++ capistrano-2.5.18/lib/capistrano/processable.rb	2010-05-21 10:36:02.000000000 +0200
@@ -38,7 +38,7 @@ module Capistrano
     def ensure_each_session
       errors = []
 
-      sessions.each do |session|
+      sessions.compact.each do |session|
         begin
           yield session
         rescue Exception => error