* test/ruby/test_thread.rb
  (TestThreadGroup#test_thread_timer_and_interrupt): skip on Windows.
  Process.kill cannot kill a subprocess if CREATE_NEW_PROCESS_GROUP
  flag is not specified in a call to CreateProcessW().

* win32/win32.c (CreateChild): revert the usage of
  CREATE_NEW_PROCESS_GROUP flag for compatibility.
  [ruby-core:43245][Bug #6131]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* include/ruby/win32.h (rb_w32_aspawn_flags): add the declaration of
  new function.

* process.c (enum): add EXEC_OPTION_PGROUP and move the position
  above for the usage in proc_spawn_n().

* process.c (proc_spawn_n): add an argument to pass new option
  `new_pgroup`. The option specifies CREATE_NEW_PROCESS_GROUP flag to
  CreateProcessW(). This flag is necessary for the usage of
  Process.kill on the subprocess on Windows.

* process.c (rb_exec_arg_addopt): ditto.

* process.c (rb_spawn_process): ditto.

* process.c (documentation for rb_f_spawn): add documentation for new
  option `new_pgroup` of spawn.

* test/ruby/test_process.rb (TestProcess#test_execopts_new_pgroup):
  add tests for option `new_pgroup`.

* test/ruby/test_thread.rb
  (TestThreadGroup#test_thread_timer_and_interrupt):
  add option `new_pgroup: true` to spawn on Windows. It's needed for
  Process.kill on a subprocess.

* win32/win32.c (CreateChild): add an argument to pass
  dwCreationFlags of CreateProcessW().

* win32/win32.c (rb_w32_spawn): ditto.

* win32/win32.c (rb_w32_aspawn_flags): add new function to pass
  dwCreationFlags.

* win32/win32.c (rb_w32_aspawn): refactor to move the content to
  rb_w32_aspawn_flags().
  [ruby-core:43245][Bug #6131]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35250 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Merge branch 'trunk' of git://github.com/ruby/ruby into trunk
* lib/webrick/httpresponse.rb (WEBrick::HTTPResponse#send_body_io):
  use readpartial to get data even if the response is streaming data and
  each data is smaller than @buffer_size.
  patched by yu nobuoka. [ruby-dev:45471] [Bug #6230]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2012-04-08

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35254 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* io.c (io_unread): cast as long the value for extra_max.
  [ruby-core:44137] [Bug #6257]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Remove unused variables.

* use Thread.pass instead of true.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/webrick/utils.rb (WEBrick::Utils::TimeoutHandler): get keys
  and fetch values from it to prevent @timeout_info's error
  "can't add a new key into hash during iteration".

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Don't run tests which can't run with editline.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35259 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Decrease the default level of try_fdopen.

Because it cause Bus Error:
http://u32.rubyci.org/~chkbuild/ruby-trunk/log/20120407T230202Z.log.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/json/generator/generator.c (generate_json_bignum):
  add RB_GC_GUARD.
  http://fb.rubyci.org/~chkbuild/ruby-trunk/log/20120407T210301Z.diff.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Merge branch 'trunk' of git://github.com/ruby/ruby into trunk